Noisy Ravens come to call on Daisy

It is a soggy day in Sydney, Australia. Rain is falling and the temperature is 20 degrees C. What a change from a few days ago! Wish I knew if Daisy liked it cooler or hotter. Do ducks have a preference? They certainly don’t mind water and their down nest would get wet if Daisy built in on the ground.

Australian Raven

For those of you dropping in but who haven’t been able to catch up with Miss Daisy’s news, I want to focus, for a bit, on the impact of the showers and WBSE Lady’s tearing the down off Daisy’s nest. Daisy doesn’t look like she is sitting on that lovely fluffy nest any longer. Daisy has collected all of the tossed down that she could – which was a lot – and has brought it back onto her nest. Just as quickly as it dries, it rains again. Then the eiderdown gets soaked and turns into a soaking blob. The heat from Daisy’s body will eventually dry it but the forecast is for four more days of rain and cool weather.

There is that saying that a picture is worth a thousand words. I am a very visual person as I imagine many of you are. So I am posting two images in order for you to easily see the impact that rain has on the eiderdown that Daisy has plucked off her breast to line her nest. The top one shows Daisy on her nest when it is dry. Notice how thick and fluffy the eiderdown is. Daisy looks like she is brooding on a cloud.

Fluffy nest with dry down.

The image below is not focused but you will still be able to see the impact of the rain on the insulating down. The down is no longer fluffy. The wetter it gets the more it loses its volume. You can also see that the eggs can no longer be covered leaving them vulnerable to predators. Daisy does try hard to move other plant material on top. She has only so many leaves to use. If you think about it, she has not pulled any twigs over her eggs. She might intuitively know that those sticks of wood could break her eggs.

Matted wet eiderdown

It is right after noon on the nest and it has been a relatively quiet morning for Daisy. She did have several visits from Ravens that sent her hunkering down on her eggs. They flew back and forth around the nest tree and into the forest and back again for about fifteen minutes. They were not chasing the sea eagles but when Daisy hears their caw she really pays attention.

Daisy going into defensive mode.
Daisy relaxed ater ravens leave.

After the Ravens had their turn disturbing Daisy, the Butcher Birds came to the nest tree. Butcher Birds are songbirds. They are similar to Magpies. The grey ones only live in Australia. They have a dark mask or an eye stripe just like Daisy! It is thought that these black stripes or masks help to block the sun for the birds so they can hunt or dabble better. If you know about American football, you might have seen the players smearing a black substance under their eyes. That also helps with the glare and I bet, a long time ago, humans learned that trick from birds. They have brown eyes and legs. The pointed beak, with a hook, is also grey. They can be very aggressive. They live in forests and mangroves feeding on insects and small mammals, fruits and seeds. They are known to also eat lizards or other small reptiles.

Butcherbird

Daisy waits to go dabbling and to the bathroom. Around 15:31, she begins to gather the leaves and tuck in the down to try and cover her eggs as best she can.

Daisy begins to cover her nest.
Daisy pulling down and leaves with bill.

She is in no rush. The ravens and the sea eagles are not about. She can take her time. Because it is cool, she will want to try and get as much insulation as she can over the eggs along with the leaves that she has been pulling toward her all day.

Daisy leaves her nest at 15:31:45.

Daisy leaving to go forage.

Despite the down being somewhat soggy in places, Daisy does a really good job concealing her eggs. Notice the two identical leaves across from one another. Daisy has done a marvellous job at decorating her temporary nest with the terracotta covered foliage.

Eggs are concealed with down and leaves.

So far, except for the anxiety produced by the Ravens’ visit, Daisy has had a relatively quiet day. She has waited til later today to go hunting for food. It is now 21 degrees C and 100% humidity with rain. Sun set is around 20:04. That is four and a half hours away. It is certainly safer for Daisy to go foraging as late as she can because she would miss the sea eagles if they came right before dusk. However, WBSE Dad has been known to show up around 17:00 on several occasions. Let us hope that no one comes, the eggs stay covered, and Daisy returns in about an hour and a half. Hopefully those eggs will still be warm. It is too bad we can’t somehow slip a little electric or solar blanket in that nest for them!

Thank you for stopping in to check and see how Daisy is doing. It is currently day 17 of incubation. The hatch window opens on day 26. So many did not believe that Daisy would still have a nest or any eggs. No one knew how the sea eagles would react. Many thoughts the ravens would force Daisy off the nest and they would then devour the eggs. But so far, none of that has happened. The sea eagles have been confused and have not harmed the eggs other than the one dad ate. So, there could be hope for some of the eggs to be viable. Oh, wouldn’t it be wonderful to see the little fuzz balls jump off the old Ironbark Tree nest? Ducklings born in a big sea eagle nest. Puts a smile on your face!

Thank you again for joining us to find out what is happening with the brave little duck whose nest is in an old Ironbark Tree in the Sydney Olympic Park forest. We are so glad you stopped by.

Thank you to Sea Eagle cam, BirdLife Australia, and the Discovery Centre for the streaming cameras where I captured my screen shots.

Was it THE Standoff?

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.

WBSE Dad was just not happy when he could not catch the intruder in his nest.
Dad poked around the duck’s nest but did not break any eggs.
Dad was always on alert to see if anyone was going to come to the nest.

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 guarded his nest and Daisy’s eggs against the Pied Currawong who might have eaten the eggs.

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 one egg that Dad rolled out of the nest is sitting in full sunlight.