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Author Topic: Decorah Eagles 2021  (Read 128057 times)

Matisse1

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Re: Decorah Eagles 2021
« Reply #495 on: March 04, 2021, 10:58:10 AM »

 :D
« Last Edit: March 04, 2021, 11:28:00 AM by Matisse1 »

STLbf

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Re: Decorah Eagles 2021
« Reply #496 on: March 04, 2021, 11:18:31 AM »

Enjoying the spring nest visits! Great pics everyone. This young pair is gorgeous -- there are no ugly BEs, for sure. The welcome mat must be out.  Mom and DM2 seem to be otherwise occupied at N3.  Time will tell.

LisaG1967

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Re: Decorah Eagles 2021
« Reply #497 on: March 04, 2021, 11:34:32 AM »

Matisse - Love the pics of the GBH's!

STL - Wonderful pics of the morning pair.

Matisse1

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Re: Decorah Eagles 2021
« Reply #498 on: March 04, 2021, 11:52:23 AM »

 ??? Is it DM2? can't tell who this is--hmmm
Who's been in my nest?
« Last Edit: March 04, 2021, 11:56:22 AM by Matisse1 »

LisaG1967

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Re: Decorah Eagles 2021
« Reply #499 on: March 04, 2021, 12:01:17 PM »

??? Is it DM2? can't tell who this is--hmmm
Who's been in my nest?

Great pics, Matisse.....I wish we could get a close-up of the iris.

LisaG1967

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Re: Decorah Eagles 2021
« Reply #500 on: March 04, 2021, 12:04:01 PM »

You look like DM2, but we can't be sure...lol




Matisse1

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Re: Decorah Eagles 2021
« Reply #501 on: March 04, 2021, 12:12:23 PM »

 ;)

monarch

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Re: Decorah Eagles 2021
« Reply #502 on: March 04, 2021, 12:13:12 PM »

??? Is it DM2? can't tell who this is--hmmm
Who's been in my nest?

Great pics, Matisse.....I wish we could get a close-up of the iris.

sure sounded like DM2 right before the cam op panned from the Blue Herron back to n2b. looking around like somebody's been sleeping in my bed!

LisaG1967

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Re: Decorah Eagles 2021
« Reply #503 on: March 04, 2021, 12:25:08 PM »

??? Is it DM2? can't tell who this is--hmmm
Who's been in my nest?

Great pics, Matisse.....I wish we could get a close-up of the iris.

sure sounded like DM2 right before the cam op panned from the Blue Herron back to n2b. looking around like somebody's been sleeping in my bed!

 ;D ;D monarch!

LisaG1967

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Re: Decorah Eagles 2021
« Reply #504 on: March 04, 2021, 12:25:53 PM »

;)

Matisse, my face was so close to the screen and I still couldn't tell!  ;D

LisaG1967

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Re: Decorah Eagles 2021
« Reply #505 on: March 04, 2021, 01:15:23 PM »

More activity this afternoon....someone back, and vocalizing with someone above the cam.  One eagle takes off to the right, and then you see two come back to the left.






« Last Edit: March 04, 2021, 01:25:38 PM by LisaG1967 »

T40cfr403

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Re: Decorah Eagles 2021
« Reply #506 on: March 04, 2021, 01:16:54 PM »

Raptor Resource Project
We saw two new eagles at N2B this morning! The female is around four years old and the male is an adult. This makes the multiple building even more interesting: It's one thing to build a nest for yourself and another entirely to let someone else take over! Well, we built N2B, but the concept is the same. If these eagles move in, we'll get to see how two power couples respond to one another. We hadn't considered multiple nests as a factor in eagle population expansion, but perhaps they play an important role in building populations. Nest site availability? How about a whole pre-built nest! If another eagle couple takes over N2B, what will we call them? #AsTheNestTurns #StarterHome

Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: Decorah Eagles 2021
« Reply #507 on: March 04, 2021, 01:17:09 PM »

Videos:
Pair Of Bald Eagles Doing Nestorations On N2B: https://youtu.be/BO81gHTZZ9U
Fish Breakfast at Decorah: https://youtu.be/vEAY3rpVZjM
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: Decorah Eagles 2021
« Reply #508 on: March 04, 2021, 01:17:38 PM »

Musing:
We know that Bald Eagles are quite social away from their breeding grounds. They congregate in large mixed-age groups, roost together, squabble and chase over food, and sometimes hunt cooperatively. Even breeding eagles occasionally accept migrants and wanderers, especially in late summer and early fall. Food attracts eagles, eagles attract eagles, and eagles tend to return to nest in their region of origin, so it isn't surprising that we're seeing more eagles in and around Decorah and at N2B.
But what about multiple nests? We've talked about them as a symbol of fitness, as a way to escape parasites or predators, and as something that eagles are programmed to do. But perhaps there is an advantage to establishing a group of non-cooperative nests in the same region, if food supplies support it.  Maybe fledglings have higher survival rates if they can form a post-dispersal crèche. Or maybe a large eagle presence deters (non-eagle) competitors and predators, benefitting the population as a whole. It's something we'll be looking into!
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring

T40cfr403

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Re: Decorah Eagles 2021
« Reply #509 on: March 04, 2021, 01:18:03 PM »

Did you know?
We know that modern birds descended from a group of two-legged dinosaurs known as theropods. What did dinosaur social behavior look like? Much of the behavior observed in reptiles seems specific to the ecological setting within which they live.  For all those territorial species studied, crowding results in increased social interaction, increased aggression, and a switch to hierarchical behavior. Dinosaur and reptile social behavior might provide an interesting model for bald eagles and other birds: https://academic.oup.com/icb/article/14/1/35/2066806.
Eagle intelligence? Thoughts here: https://www.raptorresource.org/.../musings-place-stories.../.
Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.
― Rachel Carson, Silent Spring