Daisy’s Monday morning in Australia (Sunday in North America) started out as beautifully as it ended the evening before. She had gone to forage returning at 19:45 yesterday evening. It appears to be a growing pattern, leaving in the heat of the afternoon and returning right before dusk. This pretty much ensures that she will miss the sea eagles if they come.
While she was away yesterday, the Rainbow Lorikeets came to visit Daisy, full of energetic chatter but, at the same time, wondering where she was! They are so cute. They almost look like stuffed plushies someone has placed on Daisy’s nest tree.
It is going to be hot again today for Daisy. They are predicting temperatures of 34 climbing to 39 tomorrow. Our pour little duck needs a paddle pool up there with her!
Daisy decided not to leave this morning for a bathroom break or to forage. Instead, she stayed on the nest. The Sulphur-Crested Cockatoos can be heard around 7:15 but it is an Unkindness that rattles Daisy’s world at 8:04. A group of Ravens is called an Unkindness and they were certainly not nice to Daisy. In fact, they were downright threatening. They moved from the top of the tree down closer. It was impossible to get am image of them in the tree (see second image below) but their shadows could be seen and their noise was deafening. Daisy was so frightened.
Look at the image below. Notice that Daisy has spread her feathers out in a manner similar to when a raptor mantles its prey. Her tail is fanned out and the feathers on her back are raised. She is protecting her clutch of eggs from these predators. The Ravens try harder and harder to get Daisy off her nest of eggs so they can eat them!
The Unkindness bullied Daisy trying to get her off her nest for five minutes. It must have seemed like a life time. And then they were away!
Except for the heat, the rest of the day has been relatively uneventful. The birds and animals of the forest are trying to expend as little energy as they can and remain cool in the hot Australian heat.
Daisy gathers up leaves and methodically covers her clutch of eggs and flies off to forage at 13:04:44.
Notice how Daisy has moved leaves over on top of her down and tucked it in tight today. She might be worried about the Ravens coming back to try and find her nest. Or maybe she thinks the sea eagles might stop in to see if anyone is incubating the eggs.
Look at the image above. You can just see Daisy flying off. It got really hot on the nest today. The afternoon is the worst. Daisy left a little earlier than usual. Eggs are incubated at 37.5 degrees. It is possible that the heat from outside and the down stuffed around could keep the eggs toasty warm until later today. I wonder if Daisy will return around 17:00 or if she will wait til almost dusk.
Thank you for joining us and checking in on the little duck that built her nest inside the nest tree of the big sea eagles.
Thank you to the Sea Eagle cam, Birdlife Australia, and the Discovery Centre for the cameras that provided the images.
Daisy has been on the nest quietly but alertly brooding her eggs. She took a very early morning break from 4:13:44 to 5:16:34. Possibly a bathroom break for a duck or a chance to grab a quick breakfast and cool off in the water before one of the hottest days on the nest. It is 14:06:40 and our cute little duck is panting quickly in order to regulate her temperature despite the fact that there is now shade on the nest.
Someone asked me about the ducklings. Is it safe for them to hatch and jump from a nest in a tree 75 feet high? Yes, it is perfectly safe. The ducklings are not harmed because the down on their body absorbs the impact. In fact, I am told that they actually bounce. It is hard to imagine! Last year a pair of Canada Geese laid their eggs in an Osprey nest in Minnesota. The goslings were recorded leaping down to the ground to everyone’s amazement. Some geese are known to build their nests on cliffs 150 feet high to be away from predators. No harm has come to the goslings when they have left from those nests.
Here is a video of a Wood Duck whose nest was in a very high tree. It is only 1.33 minutes long. Have a look. This is what Daisy’s ducklings will do. She will leap down to the forest floor and they will jump! Enjoy.
Of course, there are many fears for Daisy. Remember, she is effectively a single mother in an environment that is unusual. Her ducklings will hatch and immediately start peeping. This will draw attention to the nest. It is only twenty-four hours after hatch that they take their ‘leap of faith’ jumping off of the big nest on the Ironbark Tree. But first, before they can do that, they have to survive any predators and somehow make their way through all those twigs to the rim without getting their little paddles caught up in them. And then there are the predators on the ground. I have often wondered why WBSE Dad has not damaged any more eggs. Is he just dropping by to check, waiting for them to hatch? Him and Lady are well known for bringing in the Silver Gull chicks to the nest for their eaglets. And then there is Mr. Raven and all the Pied Currawongs and last, but never least, the foxes. I am told that they have been removed from the park. I hope so. That would be one less thing for Daisy to worry about. But for now, we will just simply rejoice in every hassle free day that Daisy has. We are now half way in the incubation period to hatch watch: February 6-10.
It is now late afternoon in the forest. The sun is back shining on Daisy’s head and the nest cup. It is so hot that there are no sounds of any birds. Everyone is trying to keep cool.
Daisy begins to tuck the down in around her nest along with pulling leaves closer to her nest. Then she sees a shadow of a bird cross the nest and she stops! She waits and listens. Five minutes later she resumes her preparations for concealing her nest and heading to the water to eat and cool off. She flies off the nest to the left, to the closest water source, at 15:11:10.
It was so hot yesterday and it is even hotter today. If Daisy follows her pattern of late, she will return to the nest between 19:45:00 and 20:00. And if the Sea Eagles are being typical, if they are coming in to check it will be around 17:00 and Daisy will be gone!
Oh, welcome to The Daisy Chronicles, a daily update on the life of the little Black Pacific Duck that has made a nest in a White Bellied Sea Eagle nest in the Sydney Olympic Forest. It is Day 13 of incubation. We could be half way to hatch!
Och, witamy w The Daisy Chronicles, codziennej aktualizacji życia małej kaczki Black Pacific, która założyła gniazdo w gnieździe bielika morskiego w lesie olimpijskim w Sydney. Jest 13 dzień inkubacji. Mogliśmy być w połowie drogi do wyklucia!
————————————————————————————-It is 7:44 on the nest in Sydney, Australia and Daisy knew what the weather was going to be today. She got up early, at 4:13:44 to go for a swim and some foraging. The weather news says it will be 36 in Sydney today and it will be hotter on the nest with the direct sunlight at times.
How many times have you checked the weather only to find out that the weather report was wrong? When I was a little girl staying with my grandmother, she would open the front door of her house and ‘sniff’. Then she would declare that it was going to rain. At the time, not knowing anything, I thought she was a witch! How silly was that? But how do birds know the approaching weather?
Some say that the hollow bones of a bird help them determine the barometric pressure and, thus, they are able to anticipate incoming weather. Others say that it is the pressure plates within their ears. Daisy is not a bird but a waterfowl and still she anticipates the changing in temperature, rain, etc. That is because she, also, has hollow bones. Recent research at The University of Western Ontario suggests that birds have an internal barometer. They can tell even the slightest change in barometric pressure and temperature. And, of course, they have these skills because knowing if they should forage or hunt immediately, if rain or snow are coming, are essential to their survival. Researchers at the University tested their ideas by lowering and raising the air pressure inside a specially built wind tunnel. If they lowered the air pressure, the birds would immediately start looking for food and prey. Low pressure means that a storm or rain and winds is approaching. They might even have to find a safe place to stay for hours or even days depending on the strength of the storm. Likewise, if the barometric pressure and temperature rise a bit, the birds will have a reasonable morning in the nest preening before heading out to hunt or forage. Today, Daisy leaves her nest early because she knows that it is going to be very hot during the day and she may need to dabble several times rather than just one long foraging trip.
For those of you who are ‘sort of’ keeping up with Daisy, things have been relatively quiet for a few days. Today is day 13 of brooding. The WBSE ‘Dad’ made a surprise visit to the nest tree last evening at 16:59:24 but as quick as he appeared, he left at 17:03:43. I am sure he thought he would catch whoever was brooding in his nest. But Daisy has been very smart. And with the heat she may stay out foraging or dabbling longer. She landed on the rim of the nest at 19:49:49 but was very cautious looking around before venturing over to her eggs. In fact, she did not actually go over to the nest cup until 19:52, three minutes after arriving.
Daisy is very much aware that the White Bellied Sea Eagles come and go in the forest. Sometimes they stay for a few minutes, other times for many hours. She listens for the vocalizations from the other animals and birds in the forest to let her know if they might be coming. Her survival depends on it.
At 4:13, it is already more than 22 degrees C on the nest. Daisy is anticipating a very hot day. She has decided to go dabbling early before all of the other birds and animals in the forest are awake. You can see from the image below that it is still very dark in the forest. What we are learning is that Daisy, a Black Pacific Duck, can see in the dark better than the WBSE.
In fact, anyone observing this nest is learning a lot. No one can remember a Black Pacific Duck making their nest on a Sea Eagle camera or a place where we could easily observe without threatening the wildlife.
If you look carefully at the image above, you can see Daisy’s tail on the right behind the tree branch. She is just preparing to fly off to the water.
Daisy forages for a little over an hour. She returns to the nest and quickly bets on her eggs to incubate them. She rolls them with her paddle feet carefully and turns in the nest gently.
Daisy returns just after 5am. Sunrise is at 6:05. She knows that the sea eagles often fly into the forest at dawn. In the image below she has heard the sound of ravens. Ravens, you will remember, often chase the sea eagles. She listens carefully for several minutes before settling down.
By 8:30, Daisy has already had visits from at least one Sulphur-Crested Cockatoos and the Ravens were alarming at 8:04. Now the Rainbow Lorikeets can be heard in the forest but I cannot see them on the nest yet.
It is now after 10:00, and the sun is shining on Daisy in the nest. She has already starting panting in order to regulate her temperature.
It will be 36 degrees C in the forest today. It is understood that it is hotter on the nest. Look carefully and you can see Daisy’s bill open. That is her panting. The shade is ever so slowly moving over Daisy but the heat is almost unbearable. Instead of panting slowly, now it is a fast clacking of her bill.
Let us hope that it is way too hot for the sea eagles to be in the forest today. A day without sea eagles is a safe day for Daisy! And it is going to be so very hot that she doesn’t need a hassle with other predators either today.
Thank you to the Sea Eagle Cam, Birdlife Australia, and the Discovery Center for the camera that supplied the scaps of Daisy and her nest.
It is Day 12 of Daisy’s brooding. Thank you for joining on this magical journey of the little duck who, instead of making her nest near the water, chose the great big nest of the White-Bellied Sea Eagle.
To 12 dzień lęgów Daisy. Dziękuję za udział w tej magicznej podróży małej kaczuszki, która zamiast założyć gniazdo nad wodą, wybrała wielkie, duże gniazdo orła bielika.
It has been a very quiet and rather hot day for Daisy, the Black Pacific Duck whose nest is in the old Ironbark Tree in the Sydney Olympic Park. Thus far, the only visitors of any note today were the chattering Rainbow Lorikeets who came around 8am.
Yesterday, I mentioned that Daisy is in a category of ducks known as ‘dabbling’ ducks. The information that I had, at that time, was that they foraged along the shores of the rivers and lakes. This did not support pictures I have seen of them in the water hunting for food. So I looked for more information. One small informative page for children said that they mainly dabble at night. Photographs show them foraging during the day. And we know from Daisy’s behaviour that she goes out normally mid afternoon to feed. But we also know from our observations of Daisy that she can see well enough in the dark to come and go from the nest. That same bulletin stressed that the duck plunges its head and neck under the water, raising its rear end vertical to the surface. That is why one of the people working as a moderator for the Sea Eagle cameras said that when she saw the Black Pacific Ducks in the canal, all she could see was their back end. Now it all makes more sense. They also feed in grassy areas.
Like Raptors, Pacific black ducks are monogamous. Males and females will stay together having only one partner until one of them dies. Their courtship consists of preening one another, flapping their wings, and bobbing their heads. While most Pacific black ducks build their nests near a source of water, we have learned from observing Daisy the Duck that she did not do that. So it is not always the case. Indeed, you might remember that a woman from Poland wrote to me about a duck making her nest also in an eagle’s nest. Those ducklings survived. The female lays from 8 to 123 eggs. If we look closely at Daisy’s eggs, they are white. Daisy will incubate the eggs from 26 to 30 days. That is two days shorter than the information I have previously posted. We know that they are precocial, able to feed themselves at birth. What I have not mentioned is that they will be fully independent of Daisy in 48-58 days after hatch. Daisy’s ducklings will be ready to find their own mate and breed when they are one year old.
One of the most beautiful parts of Daisy’s plumage is the speculum. It is a beautiful iridescent green. You can see it in the image above with Daisy and the Rainbow Lorikeet and in the image below. Depending on the light, the emerald green speculum sometimes appears blue or purple.
And did you know that Daisy does not have any teeth? She has tiny serrations located along the inside of their bill that helps them filter out their food from the water. Daisy’s ability to sort out her dinner from the river water means that these serrations work kind of like a colander or a strainer!
It is 14:57 and Daisy has just left the nest to forage. I noticed two things about her departure just now. First, she covered her nest with the down folding it over like she has on other days but she did not spend as much time arranging leaves and plant material over the top of the nest. She also flew out a different direction to some days. Often she goes to the right but if she leaves from the left side of the nest, as she did today, she will be closer to the water. She must be very hot and hungry. She returned from her foraging last evening at 19:07 and has not left the nest since.
I don’t quite understand why Daisy left and did not cover the down over the eggs with plant material, leaves, and twigs this afternoon. I wonder if it is because of the intense heat? She is always very meticulous about concealing the eggs well so predators cannot see them. And the wind is blowing. She was not scared from the nest. So, what do we think: was it the heat and the sun? she did not want the eggs cooked in the heat of the Australian summer?
It has been a hot day and the forest has been relatively quiet. Daisy was incubating her eggs for twenty hours straight before taking her break. The weather report for tomorrow says that it will be even hotter, 36 degrees in Sydney.
A quick update: The White Bellied Sea Eagle called ‘Dad’ fly onto a branch of the nest tree at 16:59:24. He did a little preening. Never went down to the nest. Thank goodness as the wind had blown the down open and eggs could be seen. He departed at 17:03:43. I am so very glad that Daisy was not there or flying in. It does seem that this time of evening is the typical time he arrives. Well, he is gone now. Back to find some cool breezes off the water of the Parramatta River.
Please join us again tomorrow as we follow the life of this little Black Pacific Duck.
Thank you to the Sea Eagle Cam, Birdlife Australia and the Discovery Center for their camera from which these scaps came.
It is noon on Daisy’s nest in the Sydney Olympic Park forest. She has started to pant as the sun shines directly on her. Like other birds, panting is a way for Daisy to regulate her temperature; she does not sweat like humans. It is, as summer days go, hot. The weather at Homebush Bay indicates that it is 34.1 degrees C. I wonder if it is actually hotter on the nest?? It is normally understood that heat rises. And, as you can see from the image below, Daisy is in direct sunlight right now. Some parts of Australia are bracing themselves for very hot weather in a few days, up to 39 degrees C.
Many have thought that Daisy would need to take more breaks during the day as the heat builds. However, since it is 12:30 and she remains, I am thinking that she will follow her regular pattern of going off in the afternoon to forage. She has now gathered up more down to cover up the eggs from predators.
At 13:18 Daisy begins to take the down of the nest cup and fold it over inwards. Sometimes she just does this and then will turn and do her cute tail wiggle. Occasionally, she does this when she is rolling her eggs but, most often, it is a sign that she is thinking about leaving to eat. Remember, Daisy does, if all things go serenely, have a pattern of leaving the nest between 1300 and 1400 to forage. Yesterday it was 14:02. And yesterday, she returned at 16:49 but noticed both WBSE on the camera tree and aborted her landing on the nest. So, on average, if voluntarily, it appears that she takes about a two and a half to a three hour break.
In the images below, Daisy begins to tuck the down in around the egg cup. Once the down is folded onto the top of the eggs, she then goes about placing leaves and plant material, and small twigs to further disguise the location. It took her eight minutes to get everything right so that she can leave. She departed at 13:26.
All birds have predators and Daisy is particularly vulnerable as she is an outsider to the forest. Her presence and her seven eggs have caught the attention of some, like the Raven and Pied Currawong, that would eat her eggs. Like Daisy’s plumage that serves as camouflage, the manner in which she has concealed her nest is meant to distract any potential threats. She has used the leaves and plant material on top. They blend in perfectly, there is absolutely nothing that would call attention. Daisy is also very discreet and alert in her comings and goings from the nest. Every move is slow and calculated unless she is frightened off by the approaching sea eagles or if she notices their arrival in another tree. Then she leaves quickly!
This is day 11 of Daisy’s brooding or incubation. Even though the eggs were laid on different days, Daisy did not start hard incubation until the last egg was in the nest. Imagine that one minute there are eggs, and within a few minutes the nest will be brimming full of peeping and clacking ducklings. This is precisely what will happen. This is known as synchronized hatching. The number of incubation days to hatching varies but is normally 28-30.
Daisy’s little ducklings – should the nest survive and they make it through the forest to the water – will be covered with fuzzy yellow down. They will have a characteristic dark chocolate brown-black line running from their bill through their eye. There are some white patches on their wings. They will be ever so cute!
Daisy’s ducklings are precocial at hatch. This means that they do not need Daisy to feed them. Daisy’s role will be to lead them to the water where they can forage themselves. Daisy will also help them to learn about predators and she will keep them warm in the evening. In a couple of months their new plumage will be that of an adult Black Pacific Duck, like Daisy.
They are known as ‘dabbling or puddle ducks’. They feed by tipping rather than diving to the bottom of the shallow water. They often forage at the edge of the river and lake like they are doing in the images below. They do not, however, hunt for food on land.
It is due to be another hot day in the forest tomorrow. The prediction is that it will be 37 degrees Celsius. This might turn out quite well for Daisy as the White Bellied Sea Eagles could be at Goat Island enjoying the cooler weather near the water. It is 16:42 and Daisy has not returned to her nest. She will be enjoying the cool waters of the canal and the river and, since it is so hot, might decide til near dusk when it is safe for her to return to her nest. The sea eagles are normally roosting then.
An uneventful day is a good day for Daisy the Duck.
Thanks for dropping by to check on the little duck who is occupying the large sea eagle’s nest in Sydney Olympic Park forest. Stay safe everyone. See you tomorrow!
I am grateful for the Sea Eagle cam, Birdlife Australia, and the Discovery centre for the cameras they support. This is where I get my scaps.
Daisy the Pacific Black Duck returned to incubate her eggs in the old Ironbark Tree at 7:46 pm. She had a really uneventful night on the nest.
The pattern has been for the WBSE ‘Dad’ to come either alone or with his mate, ‘Lady’, at dawn to check on the nest. Every morning Daisy has been alert and has been able to leave the nest quickly, sometimes even being able to cover up her eggs. Today was her fifth day of incubation.
The cameras have not yet switched to their daylight setting and Daisy is very alert to everything that is going on in the forest. If Dad sticks to his pattern, he will show up any time.
At 6:05:49, Daisy hears Dad landing on the branch that supports the camera tree. She has only a split second to get off her nest before the largest sea bird in Australia arrives!
The camera operator took the opportunity while Dad was still standing at the edge of the nest to zoom in on the eggs to see if any of them were broken. It appears that all six are intact. Daisy laid eight. Dad ate one and one was probably lost in the forest the day Dad chased her off of the tree before she could lay her egg. And that is only a guess. She had laid an egg each morning so there is no reason to presume that she did not that morning.
To me, one of the most interesting aspects is the way in which the little duck made the egg bowl or cup to hold her eggs. Using the down she took from her breast and simple plant material and leaves she has almost felted together a lovely nest, the envy in its colour selections of any interior designer.
Dad still remains confused. He knows ‘something is up’ but precisely what that is, he is unsure. This is his nest in his territory and there are eggs and some lightweight fluffy material that is new to him.
At first Dad simply messes with the down like he has done every morning. It seems to mystify him. But at 8:21:31, he sticks his beak into the nest cup and rolls out an egg. You can see that egg in the featured image at the beginning of this blog. Then he goes back up to the parent branch of the Ironbark Tree and stands guard.
Dad monitors all of the activity in the forest. Each little thing that moves gets his attention. What became interesting was that the Pied Currawongs that bother him and Lady and also chase their young out of the forest before they are ready to fledge, sometimes, came around the tree. Just as Dad would have done if it was his eggs on the nest, he sounded an alarm, a honk, for them to leave. And they complied!
Dad left the nest to chase some small birds at 11:54 am. He has not returned. At that point, the eggs had been uncovered for six hours. It is now almost 3pm and the eggs have been uncovered for nine hours. One lucky thing for Daisy is that the sun shone directly onto the nest cup. Whether or not the egg that is showing (see below) that Dad rolled is too hot is unknown.
It is summer in Australia and the temperatures range from 25-29 or even 30 C. It is anyone’s guess if the eggs are viable or if they were even fertilized in the first place. Some birders on the ground did see a lone Black Pacific male duck swimming in the canal yesterday.
The big question is: Did the WBSE finally achieve their goal which was to scare away the intruder for good? Stay tuned!
The Pacific Black Duck, Daisy, left her nest at 14:41 to forage in the nearby Parramatta River. I watched her as she began to ready herself. She pulled more leaves and plant material to the nest and began quickly to push the down into the nest bowl. She carefully covered all up and departed from the right side of the Ironbark Tree, the exact spot that the White Bellied Sea Eagles land when they bring food to their eaglets.
It has been almost a half hour since Daisy left and I find that my pulse is racing. There are noises in the forests, alerts, vocalizing. Which are friend? and which are foe? It is a blistering hot afternoon in Sydney. Maybe Daisy knows that the other birds will be out hunting at dawn and dust and maybe quietly napping during the sweltering heat of midday. If so, that could certainly help protect her eggs while she is away. It is a shame that there is no defensive mode for the male partner to play so that the eggs are safe while she is away.
Daisy has been gone almost an hour. Most of the literature on ducks and their incubation says that they normally stay on the eggs twenty-three out of twenty-four hours. I find my heart racing faster every time I hear the call of a bird glancing up as nervous as Daisy is on the nest. I do wish she would return! Quite honestly if I could jump through the computer screen, I would go and sit on those eggs so that no one could harm them.
A falconer acquaintance, Laura Culley, says that we should not worry. She says it is assuming the outcome before it has even happened. And, of course, she is right.
Most duck nests actually do not survive. But I think that this one is special. Daisy arrived on the nest just about the time a friend of mine had an operation and received some ‘not so terrific’ news from her doctors. My friend does not want to die, she wants to live and the people that she has met and the fact that this duck is on this nest has energized her. Daisy just could be a life saver. I hope so. But for her to do that, she needs to be able to incubate these eggs and have her beautiful ducklings jump off the edge to start their lives. For now, just sharing the comings and goings, the suspense, and the hope of the nest with others is making my friend happy to wake up every morning. Bird cams have a way of doing that.
My anxiety. I wish it had been for naught. At 1600, WBSE landed on the nest. They carefully, looking all around them, walked over to the nest and began flinging the down. Then after what seemed like a life time but was only a minute, they jumped up to the parent branch and then went and stood guard on a the far end of a branch of the nest tree. It was quite nerve wracking. The WBSE has been acting erratic. He appears to be completely confused by the nest and the down. The fact that he has not returned to eat more eggs is hopeful. But he appears to be both curious and weary of whoever is using ‘his’ nest.
But thankfully, mess or not, Dad did not disturb the eggs!
Dad leaves just as quickly as he arrives. He made a mess of Daisy’s tidy nest but he did not disturb the eggs. He spent most of his time poking his beak into the down and then quickly raising his head to see if anything was approaching the nest. Indeed, when he was on the nest he was just about as anxious as I have been all day hoping that no predator would arrive while Daisy was away. And then poof! Dad is gone. What is he doing with the down and where does he go?
Daisy returns to the nest about twenty minutes after Dad the WBSE has departed. She is cautious. You can tell that he knows something has been there. She looks around and slowly makes her way to the nest where she begins to gather the plant material and the down that Dad had tossed about.
It is nearing 1700 Sydney time. It is unlikely that Daisy will leave again before night falls. The shade is falling over the old Ironbark Tree and Daisy’s camouflage offers her some security – let’s hope!
Just to recap what happened on January 13 at the White Bellied Sea Eagle nest in the old Ironbark Tree, Sydney Olympic Park. Yesterday, Daisy the Duck arrives at the nest at 5:19 am. At 10:33, Daisy laid egg number 8. It was a very hot day in Sydney, rising above 26 degrees C. It was very hot on Daisy, a water fowl, when the sun was shining directly on her as she incubated her eggs. At 16:49 Dad returns from his sojourn to Goat Island unexpectedly. Daisy leaves the nest in a hurry and does not cover up her eggs. Dad poked around the eggs in the nest bowl but he did not eat another egg nor does it appear that he damaged any eggs. In fact, Dad was pretty careful around the eggs. Dad leaves at 19:16. Daisy returns to her nest at 20:24 and incubates her eggs all night without any problems from Dad. This is the first time that the Black Pacific Duck has stayed all night incubating her eggs.
As the sun begins to rise over Sydney, Australia, WBSE ‘Dad’ returns to the branch of the cam tree and sits there observing the nest.
Daisy does not immediately notice Dad’s arrival at 5:54. When she does, she scurries off the nest leaving the eggs uncovered!
With everyone holding their breath afraid that Dad would go and disturb the eggs or chase after Daisy, we waited and watched. But Dad only observed. He flew off the cam tree branch at 6:13.
There are, of course, many questions and no one has an answer. No other bird has ever made a nest, to anyone’s knowledge, in the WBSE nest tree. There appears to be no literature. Black Pacific Ducks are opportunists and did, at one time, make their nest in a bear enclosure at the Sydney Zoo. As their numbers dwindled, the ducks moved to another location. In fact, often their nests are in marshy areas near water. Why this duck picked this sea eagle nest seventy-five feet off the ground is anyone’s guess. Now, though, people are wondering if the sea eagle will leave Daisy alone to raise her ducklings. She is no threat to him or his territory. Only time will tell. And no one has any idea what the WBSE ‘Lady’ would do if she found some other bird’s eggs in her nest!
She returns, somewhat cautiously, at 6:37. She slowly walks down from the branch and begins incubating the eggs again. Wet grasses on her bill show that she did, in fact, have some breakfast while she was away.
It is nearing 9 in the morning, 14 January in Sydney, Australia. So far, all is well on the nest. Updates later tonight.
The continuing saga of Daisy the Black Pacific Duck and Dad the White-Bellied Sea Eagle played out over the early morning and afternoon of 12 January. Dad stayed near the nest during the night keeping watch from a branch on the cam tree when he was not snoozing.
At 5:25, Dad was on guard trying to catch the bird that was using his nest. Daisy appears at 5:27. They must have just missed one another! She checks out the nest, does some quacking, and goes up what is known as the parent branch on the WBSE nest. At 5:40:17, Daisy flies from the branch into the forest. At the same moment, Dad returns to the nest. My goodness, this little duck is awfully lucky or she has the best intuition about the forest alerts!
According to all the people who have observed this nest over the years, no other bird has ever made a nest within the wide WBSE nest and laid eggs. Plenty of small birds come to visit, including an owl, but none have ever attempted to use it.
Within a blink of Daisy departing, Dad arrives back on the scene!
Dad rummages through the nest, tossing the fluffy down. He sets his eye on one of the eggs. Tapping it with his beak, he makes a tiny dent. Working with a talon, Dad is successful in removing the egg from the nest cup. After eating the contents, Dad is very careful to clean up the shells dumping them over the side. Does he not want the owner of the nest alerted to his tampering? Daisy now has 5 eggs left in her clutch.
Dad departs the nest at 6:08. Meanwhile, Daisy is keeping close watch from the forest. She returns to the rim of the nest when she is absolutely sure that Dad is down at the Parramatta River and might not disturb her for awhile. She watches and listens from the rim of the nest over the forest. She is so alert. She raises her head many times just to check on the sounds. You can hear the Currawong in the background. Often they chase the WBSE. Then there are the Noisy Miners. Lorikeets can be heard in the distance. Daisy is alert to each and every sound! When she feels a little safer, she moves closer to the eggs. But, interestingly, she never goes near the nest. She remains ‘frozen’, not moving or making a sound for more than an hour.
Daisy is very quiet so as not to draw any attention to her movements. She has waited as long as she can to lay her seventh egg. At 9:07 she sits in the nest. At 9:32:28, Daisy lays her egg.
During her labour, Daisy rotates in the nest, enlarging it with her paddle feet. At the same time she is breathing a little heavier and her tail is moving up and down slightly as she gently arches her back, at times.
On all other previous days, Daisy had stayed on the nest for about an hour to an hour and a half after laying her egg, leaving to go and forage at the river. Today, Daisy does not leave. It appears that she is in hard incubation.
It is nearing 2:30 in the afternoon Sydney time. Daisy remains on her eggs. Only time will tell what Dad will do if and when he returns. Stay tuned!
UPDATE: Daisy has been incubating the eggs for seven hours now. It is 26 degrees C in Sydney and hotter in the sun on the nest. Daisy is panting from the heat. So far, no sign of the WBSEs.
At 4:30, Daisy covers the eggs and flies from the nest.
The suspense is killing me! Back tomorrow with the latest.
Just to bring those of you up to speed in case you haven’t read my earlier blog. In early December, a pair of Pacific Black Ducks investigated the nest of a pair of White-Bellied Sea Eagles (WBSE) in an old Ironwood Tree in the forest of the Sydney Olympic Park in Sydney, Australia. On 14 December, a nest cup was excavated in the centre of the sea eagle nest by the ducks. (Note: This is off-season for the sea eagles.). Six days later, ‘Dad’, the male partner of ‘Lady’, to whom the nest belongs, came to the nest for one of his periodic territory checks. The female aptly named ‘Daisy’ by Phyllis Robbins of the WBSE chat group laid her first egg in the nest cup on 5 January 2021.
On the morning of 11 January, Daisy arrives at the nest just after dawn. Before she could lay her egg, vocalizations from other birds in the forest alert her that the sea eagle is about. Indeed, Daisy might have been listening for the male sea eagle because he had come to the nest the previous day. That day she quickly covered the eggs and flew off the nest but stayed in proximity. Dad stayed for about half an hour before leaving and within a few minutes, Daisy returned to lay her sixth egg without interruption. This morning, however, Daisy had not laid her egg when the large sea bird appeared. She stood on the rim of the nest and quacked as Dad flew to the camera tree. She left so abruptly that she did not have time to cover her eggs but, it seems that Dad did not notice her physical presence on the nest or her quacking.
Dad surveyed his territory remaining on the tree that supports the camera for the live stream for about an hour. He might have thought that the bird laying the eggs would return without noticing him and he would find out who this mysterious bird is.
After about an hour and a half, Dad flew to the nest tree to see first hand what was happening. He had noticed the eggs the previous day by rummaging around in the leaves. He even tried to pick one up with his bill but to no avail.
Today the eggs were clearly visible. Look carefully. Daisy has started removing down from her breast to line the nest. This physiological process is called zugunruhe.
Under normal circumstances, Daisy would arrive at dawn to lay her egg. She would do this every day until she finished laying all of the eggs for her clutch. This can vary between 8-13 eggs. After laying her egg, Daisy often remains on the nest for a period of about an hour before departing for the river to forage for the rest of the day. Once all of the eggs are laid, Daisy will begin full incubation, being relieved periodically by her mate. After twenty-eight days, the ducklings will hatch. Then, the following day (after 24 hours), they will take a giant leap of faith and jump off the rim of the nest, a distance of approximately fourteen metres, to the forest floor. Here they will follow their mother to the Parramatta River where they will immediately begin foraging for themselves.
Today, Dad began to curiously inspect the nest with the eggs. For what seemed like an eternity, he would look at the eggs and then look around the immediate environment of the tree. It was actually like he was confused. At one point he tried to pick up one of the eggs but he couldn’t do it. It isn’t that they are heavy; the shape is just awkward for him to handle with his beak. He did not try to move the eggs with his giant talons nor did he attempt to break them. He did toss some of the down around. At one point, it even looked like he might start brooding the eggs. It was a very strange exchange because Dad’s hormones are not thinking about breeding or brooding. He is in the midst of moulting.
The entire morning was very suspenseful. Currawongs and Sulphur-Crested Cockatoos were screeching in the background and at one point, it was thought that Daisy even did a fly by.
And then the oddest thing happened. Very delicately, Dad covered up the eggs at 9:01 am.
If that wasn’t peculiar enough, Dad went up to one of the ‘parent branches’ on the nest tree and stood vigil. More than once, Dad flapped his wings to keep the Currawongs away! Take altogether, these three actions scream out that his intuition is to protect the eggs.
Dad stayed for more than an hour before departing. At the time of this writing, he has returned once again to the nest tree where he is keeping watch over his territory.