Tag Archives: plumage

Middle’s enormous crop…and then Big’s fury…plus more news in Bird World for early Thursday

27 October 2022

Good Morning Everyone,

I hope this finds everyone well with a smile on their face!

Going for a walk, no matter how short or how long, can be invigorating for one’s mind and for our bodies. I remember when my mother broke her hip. Her surgeon, at that time, was the surgeon for the OU Football Team. I have forgotten his name but, I will never forget the day he looked into my mother’s eyes and told her if she didn’t get up out of that hospital bed, she was going to lose her ability to walk. It had been 2 days since the surgery and I laughed when he told me he was ‘nothing but a glorified carpenter’. What a character and an amazing surgeon. My Mum took it to heart and got herself up and within the month was walking 2 miles. Oh, she did well. The weather was lousy and her and her best friend, Dorothy, would go to the mall and window shop as they got their exercise. It was a good lesson for me, too!

It was a frigid early afternoon yesterday. It was 1 degree and the wind was blowing over the pond and bringing a chill even through the wool coat. I reminded myself that it will soon be parka weather. The state of the Wood Ducks needed checking. There was only one lonely male that I could find. He came swimming towards me thinking I had food. What a tragedy. Several of the ducks at that particular park pond had ‘Angel Wing’ this year. It is doubtful that they will survive. I left before he wasted his energy coming all the way to the shore. What a beautiful sight he was!

Did I tell you that I have the greatest fondness for ducks?

It is rather miraculous. When I look at a male Wood Duck, the patterns in the plumage remind me of weavers in India. Those women have the patterns emblazoned in their minds but, for these precious ducks, the pattern is laid out as the feather emerges from the follicle and grows. Feathers grow out of a quill or shaft. In young birds, we call these ‘blood feathers’ because they actually contain blood until the feather is completely finished growing.

A single follicle can produce, like a weaving, multiple colours and patterns. If I think about it for a long time my mind just becomes boggled. Just look at the multiple colours that go into this handsome duck. Did you know that the male Wood Duck plays no part in raising the young? Absolutely none just like poor Daisy, the Pacific Black Duck that laid her eggs on the Sea Eagle’s nest in the Sydney Olympic Forest. Daisy had absolutely no help – not even security. So if the male doesn’t bring food for the female or provide security or help with the little ones, what does he do? Well, guess what? He just has to look extremely handsome! The female picks him for his beautiful plumage – they want a male that stands out from all the others.

On the other hand, the female needs not to stand out in a crowd but, blend in with her environment. She needs to have good camouflage in order to not call attention to predators.

I really adore female Wood Ducks. It is because they are quiet and shy, often hovering in the background wanting seed tossed on the ground and concrete by visitors but not daring to do so. They are often chased by the geese and by the Mallards.

The females have a tiny crest compared to the males and instead of a red eye ring and eye they have a yellow eye ring in a gorgeous white teardrop shaped eye patch. No flamboyant colours for them. Grey leading into a dabbled brown breast with some lovely blue on the wing to match their bill.

Oh, to me she is the most beautiful delicate little thing. I missed seeing the females. This image was taken on 10 October. I will check again in the next couple of days as the weather warms to see if any were just lurking on the island where I could not see them.

In the mailbox:

‘L’ sent me a great article from BirdLife on a recent study on how to make overhead power lines safe so that birds do not collide with them. It is a good read.

https://www.birdlife.org/news/2022/10/24/new-study-how-to-stop-birds-from-getting-electrocuted-by-and-colliding-with-power-lines-across-the-eu/

Nest News:

Besides the sight of a few ducks putting a big grin on my face, it was absolutely the state of the Port Lincoln Osprey nest that has had me grinning from ear to ear. I continue to say that it is horrific to lose a chick, heart breaking every time and they are not forgotten. Never.

Middle is doing so well. He is really showing his stuff – sitting right by Big, doing the snatch and grab, not being fearful to eat the last bite offered. Confidence. Middle was doing really well for the past several days and most of Thursday in Australia and then…he wasn’t. Middle now has a bald spot on his head!

Another fish arrived on the nest and while it wasn’t as big as some of the early morning ones, it was large and everyone got a good feed. I almost think Mum caught it as she appeared slightly damp when she returned to the nest. I cannot be 100% sure, however.

Middle is on the left side of Mum and Big is on the right when she begins feeding. We can just see cute Middle peaking out from under Mum’s wing.

Middle standing getting ready to stretch his wings. You can see the dark thermal down that will be under their juvenile feathers on Big who is leaning over.

In the image below you can really see Big’s tail feathers coming in and her thick

In between rain and wind, Middle and Big continued to eat and eat and eat. It is difficult to even imagine where they put all that fish. In both of the subsequent feedings that I watched – and that was even before mid-afternoon, Middle got the lion’s share of the fish. There were no quarrels, no disputes, just Middle full of confidence eating away. It just put a smile on my face from one side to the other. Here are a selection of images from those later feedings.

Middle got the lion’s share of this feeding as well. By 1321 he is full and has moved away looking back at Mum with such a precious delicate face. Big is now having a turn.

The rain and the wind begin and Middle gets under Mum as best he can.

The storm passed and Mum flew off the nest. Look what is over on the rim of the nest? The rest of the fish that Mum was feeding Middle and Big when the rain and the wind started. Middle sees it. This time next week Middle would go over and grab that fish and start eating it but, he isn’t going to do that today.

Mum returns to feed her babies. Middle has found some room for some more fish. I honestly do not know where these two are putting the fish – they have almost been eating non-stop all morning.

At the end of that feeding, Middle, standing in profile, his showing off his enormous crop!!!!!!!!!!!!!!!!!! It has been a really good day so far for Middle and it isn’t even the middle of the afternoon.

Was Middle just feeling his oats when he decided to peck Big at 18:10? (I want to send a thanks to ‘H’ here. I was up with my coffee and had not rewound the end of the days footage. So thankful for her warning). As ‘H’ said, ‘It is a reminder not to mess with Big.’ It was a frenzied attack. Both had eaten well. Middle more than Big. I hope Middle has learned to leave his Big sister alone. Enjoy the peace and quiet and don’t push it or she will attack if provoked and Middle could be the big loser. As it stands, if you see feathers missing, Big did it but Middle provoked the attack. Gracious.

Big, satisfied that Middle, was submissive and would never do that again stopped the ferocious attack at 18:13:52 – a little over two and a half minutes from when it started.

The Melbourne Four are the most energetic and expressive eyases. They run up and down the gutter until their batteries are all worn down and their tummies are full and then they stop. All in a big puddle, altogether keeping one another warm on a drizzly day.

One of the highlights of the feedings today was when Dad brought in a freshly killed pigeon and began plucking it right in front of the four ravenous eyases. Now I say pigeon because once upon a time someone told me that the only reasons there are pigeons is for the falcons and hawks to have something to eat! The feathers were white and some of you might have a more clear idea if it was a pigeon or a gull or something more exotic. Then when the prey was plucked and all the kids were ready for some real bites instead of feathers — Dad flew off with the pigeon. What?! He did bring it back and was ready to fill those crops and then Mum showed up. She pulled a Diamond taking the prey away from Dad who had almost lost it to the oldest eyases. Mum then proceeded to fill their tanks.

Then Dad leaves taking the pigeon with him and leaving only feathers.

A few minutes later he returns with the prey.

Then Mum arrives to take over! Diamond-style.

Dad is off!

Everyone is hungry!!!!!!!!!!!!!!!!!!

‘H’ clocked 7 feedings of various links at the 367 scrape on Thursday.

At Orange, Rubus and Indigo have been eating and eating, too. I love when Little Rubus gets full and turns his back to the adult who is feeding. When did he start this behaviour?

I could watch the expressions on Rubus’s face all day. He is quite the character.

Once Indigo finishes eating she goes over to cuddle with her little brother in the corner. A little cotton candy pile.

Beautiful Diamond looks over lovingly at her two eyases. What a real treat it has been seeing Diamond and Xavier with two – the very quiet grown up Indigo and the feisty little Rubus. Such treasures.

How many times a day do we need to thank these bird families for bringing such joy to us?

Migration News:

Bonus crossed the Dardanelle Strait and flew to the Greek island of Lesvos.

Bonus is feeding near this creek. It looks like a lovely place to be.

Little Waba was in Israel. He flew into Jordan and decided to return to Israel.

This is where Waba is feeding. There were reports of 85 Black Storks at this site. Hopefully Little Waba is there among others, safe and getting full and strong. There is still more flying to do!

There has been no transmissions from either Karl II who was last heard from in Egypt and Kaia whose last transmission was from Chad. Please send them your most positive best wishes, please.

Please send all kinds of positive wishes to Middle so that he will just leave Big alone from now on. No need to bother Big. Everything was going just fine. Middle has to remember that Big is the boss even if he gets to eat first. That is only because she is letting him.

Thank you so much for being with me today. Take care all. See you soon!

Thank you to the following for their streaming cams where I took my screen captures: Port Lincoln Ospreys, 367 Collins Street by Mirvac, and Charles Sturt Falcon Cam and Cilla Kinross and to Looduskalender for their maps and news of Karl II and his family. 

Feathers

In my blog on Florida Eagles, I made mention of blood feathers. A reader, ‘B’, wondered about those blood feathers. I realized then I needed to clarify the matter. So, let us take a short look at feathers – what they actually do – and in that discussion I will clarify the ‘blood feathers’.

What are feathers? Sibley says “that the precursors to feathers were not scales but bristle like hollow structures” that evolved into what we know today as a ‘feather’. Feathers are made out of keratin, the same material used for human fingernails and toenails as well as the beaks or bills of birds.

There are seven different types of feathers. They are the wing, the down, the contour, the fail, the semiplume, bristle, and filoplume.

@Cornell Bird Lab

The down feathers have hardly any shaft. You will recall the soft down that Daisy rubbed from her chest to line her nest. You can see it in the image below. This soft down helps to insulate the birds by trapping air.

The contour feathers help give the bird its colour and shape. Contour feathers cover the birds everywhere except for the beak, its legs and feet. They are the outer covering of the bird and you are probably more familiar with them than any other type of feather. These feathers overlap. You can see these overlapping feathers on Daisy in the image above.

Flight feathers are on the wing and the tail of the birds. It is easy to get confused. Some people separate and say tail and wing to distinguish the parts of the bird where the flight feathers grow. Tail feathers help the bird with flying. They help it to change direction – similar in function to a rudder on a boat. These broad flat feathers help the bird to fly along with those on its wings.

The image below is of a Turkey Vulture. It is still flying – and is alive – despite the fact that it is missing one leg and some of its wing (flight) feathers.

“Turkey Vulture with One Leg and Flight Feathers Missing” by wanderinggrrl is licensed under CC BY 2.0

Here is a great diagram showing the primary, secondary, and tertiary wing or flight feathers. The Vulture above is missing some primaries as well as secondary feathers.

In the image below you can see the tail feathers clearly. You can also see the overlapping contour feathers.

The function of the wing or feathers is to support the bird so that it can fly precisely to its destination. Here is an example of a flight feather.

The central hollow shaft attaches to the bird at the calumus. In young birds, such as eagles, this shaft is filled with blood and is called a Blood feather. When the feather has completed growing, the blood vessels regress.

If a flight feather is broken – the tail or the wing – before it is fully grown, blood will flow. Normally, the blood of birds will coagulate just like humans and there is no risk to the bird. However, it is possible for birds, such as eaglets, to bleed to death by a simple broken feather. This is especially true if the bird has been exposed to rodenticide. Rodenticide stops blood from coagulating. In the case of the Captiva Eaglets, the elder was flapping its wings and jumping and broke a blood feather causing it to bleed to death. It had been exposed to rodenticide by a dead rat being brought to the nest.

There have been instances when birds have had to have emergency treatment because they have bled so much when a feather was broken. These are emergencies and the blood needs to stop flowing. Cornflour (cornstarch) and icing sugar can be applied to the site of the break. Both will help to coagulate the blood. If you have pet birds this is something to know if you raise little ones.

Here is an excellent article on all things feathers!

https://www.thoughtco.com/feather-anatomy-and-function-129577

The feathers are ever so important for the birds. Indeed, the feathers are absolutely essential for the bird’s survival. You will see them constantly conditioning their feathers by preening them. The feathers wear out and have to be replaced. Some birds molt twice a year to change the colour from breeding to non-breeding. Others molt only once a year. Molting uses up a lot of energy so birds generally molt during the warmer times of year such as summer. Some birds replace a few feathers at a time. Geese and ducks actually molt all of their flight feathers at once which means that for several weeks until they grow in, they cannot fly. Some of you will have seen Cardinals or Blue Jays molting their feathers. Their heads often look like they have a disease. Our favourite Red-tail Hawk molts after the nestlings have fledged. The running joke is that Big Red becomes Big Blond as the colour of her feathers goes from a deep rich auburn red to a paler strawberry blond of blond during the late summer and early fall.

“Blue Jay (Ypsilanti, Michigan) – Late July & Early August, 2020” by cseeman 
“Balding Cardinal” by Tobyotter is licensed under CC BY-NC-SA 2.0

So, to be clear, birds will not bleed to death once their feathers have fully grown in and there is no blood in the shaft. One way to help reduce the number of blood feather deaths or any deaths of our raptors is to ban rodenticide.

For American Bald Eagles, we use the change in the colour of their plumage to tell us what age the birds are. When all of the eaglets from the nest fledge, they will look like the raptor in the top left. In 2020 (I think I am right), there was a 4 year old Dad at the DNR nest in Minnesota. This was unusual. Normally the adults that are breeding are 5-6 years of age and have that distinctive pure white head.

Thank you for joining me this evening. I hope that you are all well. I look forward to seeing you again soon.

Thank you to the following for their streaming cams where I took my screen captures: Sea Eagles@Birdlife Australia Discovery Centre Sydney Olympic Park and the WRDC Bald Eagle nest in Miami.

I needed to check my glasses

It took me a few minutes to comprehend what I was looking at. For several weeks now the osplets on the Port Lincoln Barge nest have been looking more like dinosaurs than fish eagles. But, this morning with the rain, their plumage looked much different. There was a strange white over the water so my first response was – the camera has a problem. Then the water was blue and the chicks were having their meal and well——.

Here they are lined up for the 12:36:06 delivery. Gosh, they had to have been hungry despite all those feedings yesterday. The weather must have hampered Dad’s fishing.

Still, there was no fighting. The chicks are all lined up as normal with Tiny Little right up at Mum’s beak! Oh, this kid really does love its fish.

So let us remember what we know about osplets plumage. When they hatch, they are covered with a very light greyish coat of down. You can see this in the image below.

It is 21 September. That was 22 days ago. Little Bob is 5 days old; the other two are 7 days old. Note the prominent dark eye line and the light soft down. Gosh they were so little! The hatchlings will keep this light coat of down from hatch until they are 10-12 days old, according to Alan Poole.

Oh, just look at Little Bob. So cute with that great big crop. He is the one closest to the viewer.

It is 5 days later. A darker charcoal coloured woolier down replaces that soft light grey down.

This is a huge period of change in terms of plumage. As the dark wooly down comes so do the feathers. The feathers show up first on the head and back and then on the body, later on the wings and tail. The feathers on the head and neck are a coppery-gold colour. This phase is called the Reptilian phase because they look more like their ancestors of 65 million years ago than the juvenile ospreys they are becoming.

You can see those coppery-gold feathers in the image below. The osplets are also growing at a fantastic rate.

The image below of Little Bob was taken three days ago. He was definitely in the Clown Foot stage! You can also see the dark grey wooly down as well as a few of the copper feathers on the back of his neck.

The image below was taken yesterday. You can see that the juvenile plumage is really starting to come in. It appears as little round tufts growing out of the blood quills.

In the image below, Little Bob is eating the prize fish tail. He is in his usual spot near the beak of Mum!

The image below was taken just a few minutes ago. I realize that feathers, like hair and paint, can appear darker when wet so use your imagination. It is as if a huge amount of juvenile plumage came in since last evening. Those feathers are really pushing out of those quills!

That is Little Bob at the very back. He is facing to the left and looking down slightly. He still has that spot and the white on the cere with the white swipe under his eye. Right now I can still find him but I might not be able to tomorrow.

In a blink. We will begin to notice considerable changes in their size along with the continued growth of feathers. The very last feathers to emerge will be the primaries and secondaries also known as the flight feathers. Only when all of their feathers have emerged from the blood quills will the osplets be ready to fly. We will know that when they really begin to exercise those wings and attempt hovering.

To give you an idea of the ‘look’ of the plumage and the size of the feathers I have included an image of Tiny Little, the third hatch of the Foulshaw Moss Osprey nest in Cumbria. This was taken on 24 August just before she migrated. Blue 463. Look at the length of her tail and the beautiful symmetry of her feathers. This is how the trio on the Port Lincoln nest will look by the time they are 50-60 days old.

As a reminder, Little Bob hatched on 16 September so he is now 26 days old. They have a long way to go but their plumage and their size are going to change right before our eyes. We really do not need to get our glasses adjusted! It is them, not us.

Beautiful Tiny Little Blue 463 survived and became the dominant bird on the nest. She is on her way to Africa. We hope to see her again.

I couldn’t wait to show you those miraculous changes in the plumage of the three. It really is miraculous. Thank you so much for joining me. I hope to see you soon. Take care.

Thank you to the Port Lincoln Osprey Project and the Cumbria Wildlife Trust Foulshaw Moss Osprey Nest for their streaming cams where I took my screen shots.

Second Hatch for Savannah (in pictures) and Tiny Tot update

There was a wee bit of a pip overnight at The Landings Osprey Nest on Skidaway Island near Savannah. At 3:45am the second hatch pulled itself out of the egg. By breakfast time, the little one was dry and ready to go!

No training necessary. Stand up at the rim of the egg cup near mom and open your mouth. 2 caught on quickly.

There is one more egg to hatch on this Osprey nest. Perhaps it won’t. Perhaps these two will not feel the hungry that starts the food competition and they will go big and strong.

Back at the Achieva Osprey Nest, a fourth fish landed at 5:22:37. It is a big bony one. Of course, 1 and 2 are eating but surely there will be food for Tiny Tot if Dad doesn’t come and take this fish off the nest!

The fish arrives. Already 2 has Tiny Tot in the corner.

2 wants to make sure that Tiny Tot knows it is not welcome to eat. And look at that crop 2 has from the first three fish.

Never mind. Tiny Tot is watching and making its way around.

At 6:13:59, Diane, the mother, leaves Tiny crying for food by the rim and walks across the nest to pick up a fish tail to eat. She has to be as hungry as Tiny is! Tiny Tot has been chewing on the bones – self-feeding if you like – but not enough meat there to matter.

Tiny Tot blasted to Diane at 6:14:34 and Diane pulls on the end of the bone and tail. By 6:15:49 there was nothing there. Tiny Tot got on a little bit of food, but Diane is also hungry. The others are too full and sleeping. If Diane is that hungry can we count on another fish for her and Tiny? or would she eat off the nest?

Even when there is only a scrap left, 2 continues to try and keep Tiny Tot away from any food, however small. Diane was back pulling the flesh off of a piece of bone and Tiny thinks he might get a morsel. 2 wakes up to stop him.

It is clear that neither 1 or 2 need any more food. If Diane and Tiny can eat tonight it will be very good for both of them. If another fish does not come until tomorrow morning then the cycle begins again with 1 and 2 hungry. We wait and we hope.

Thank you for checking in today. You get to see the full range of Osprey growth today – the just hatched and those getting ready to fledge. You can sure see the change from the tan wooly coat to the beautiful juvenile plumage.

Thanks to Cornell Labs for the cam at the Savannah Osprey Nest and to the Achieva Credit Union for their cam. Those are the sites where I grabbed my screen shots.

Day 11 of incubation

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.

The hot sun at high noon is shining directly on Daisy.

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.

Daisy is busy folding the down that lines the nest cup inward.
Very methodically she continues folding the down in a clockwise direction.
After folding the down, Daisy begins to use her bill to bring in plant material.
It is not always easy to move the leaves and twigs with her bill but Daisy is tenacious.
Once she is satisfied that the eggs are covered as best she can, she leaves to forage to keep up her strength. It is very hot in Hornbush Bay and she needs food and water.
Daisy’s nest is nicely concealed.

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!

Black Pacific Ducklings

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.

Black Pacific Ducks foraging on the shore. Image courtesy of Wikimedia Commons.
Dabbling along the muddy shoreline. Image courtesy of Wikimedia Commons.
A great image of a Black Pacific Duck foraging in shallow water. Image courtesy of Wikimedia Commons.

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.