News and Blogs

Thank you for supporting the Raptor Resource Project!

May 6, 2025: TE3 at 25 days of age

Thank you so much for supporting the Raptor Resource Project’s Hatch Fundraiser! Because of your generosity, we raised over $12,000 to support the tools and programs that connect people to raptors, including our live-streaming nest cams, migration tracking, education outreach, and in-depth research. Your gift helps us watch, learn from, and protect these extraordinary birds. We’re so grateful to have you with us in this work, and we hope you enjoy this video of TE3 at 25 days of age!

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What are feathers? What is molt?

Feather Follicle

Eaglets go through two molts and three feather stages in the nest: natal down (and molt), followed by thermal down (and molt), followed by juvenile feathers. As of this blog, TE3 is shedding the very last of its natal down and its thermal down is rapidly being replaced by juvenile down and feathers. We thought we would blog a little more about feathers to celebrate!  When we think about feathers, we tend to think about their qualities (light, soft, fluffy,

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Eaglet Growth and Development: Week Three

April 26, 2025: Sweet eagle dreams, TE3!

We’re writing a series of blogs about the first few weeks of an eaglet’s life. An eaglet spends roughly 75 to 80 days in the nest. For about the first half, it grows and gains weight. For about the second half, it grows flight feathers and starts developing the skills it will need post-fledge. We will focus on week three in this blog. TE3 turned 20 days old today. During week two (seven to 14 days), its footpads and talons

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Announcing: RRP’s Hatch Fundraiser!

April 27, 2025: A tender moment between DNF and TE3

Please join us for our hatch fundraiser on Friday, May 2. From streaming live cams to tracking migrations and studying eagle behavior, your donations drive the work that helps us understand and protect these remarkable birds. If you value our research, education, and conservation efforts, please consider making a gift tomorrow! Contribute here: https://www.raptorresource.org/support-the-raptor-resource-project/make-a-donation/. Feel like celebrating with someone? We are celebrating with special chats on our website from 9 to 11 am, 1 to 2 pm, and 5 to

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What Makes Bald Eagles Incubate?

February 21, 2022: North Nestoration Follies!

We wrote this blog to describe events at the North Nest back in 2023, when Mr. North and DNF were coping with a lot of intruders. Instead of perching near the nest, packing in food, and developing the reserves she needed to lay eggs, DNF guarded her nest, egg, and mate from potential rivals. After egg number one, her testosterone and progesterone should rapidly decrease, while prolactin, a hormone that induces incubation and brood patch swelling, should rapidly increase. But intruder-related

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What’s Going on With The Trempealeau Eagles? Cooperative and Not-So-Cooperative Breeding in Bald Eagles

April 20, 2025: Mr. T's other nest and mate

Remember January and February of 2025? Bald Eagle Mr. T was attentive, his mate Mrs. T laid three eggs, and both eagles actively tended their nest. But after March 19, he began spending less time there. He disappeared entirely between March 27 and April 5, and when he returned, his visits were brief and infrequent. Mrs. T was left to manage the nest mostly on her own – although Mr. T brought in a few fish, he took more than

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April 12, 2025: Decorah Day Trip

April 12, 2025: Mom flying to the nest

An update on Mom and DM2. Story and photos by Robin Brumm It’s been a really long time since I’ve gone to Decorah to check on Mom and DM2! Since the weather was finally cooperating for the weekend, I decided to go on Saturday morning, so I packed up my camera and off I went. To see Mom and DM2’s nest, you have to walk down the trail quite a ways. I always bring my foldable wagon and pack my

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Two deaths, a new nest, and a mystery in Trempealeau

April 21, 2025: Mrs. T feeds TE3

It was a rough weekend and start to this week for the Trempealeau eaglets.  Yesterday, our camera operators documented Mr. T bringing fish to another nest. This morning, TE4 and TE5 died after Mrs. T left her nest to hunt in a cold, slashing rain. Bald Eagles usually take excellent care of their young and Mrs. T certainly did her best. What happened? 2024: First-Time Father? We’ve had a lot of questions about Mr. T’s behavior. In 2024, he gave all

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Welcome to the World, TE5!

Welcome to the world, TE5!

Mrs. T has her talons full! TE5 hatched at 6:35 AM this morning! The T’s now have three hatchlings: TE3, who is turning six days old, TE4, who is turning four days old, and baby TE5. As of this post, TE3 and TE4 have each eaten nine times, with five feedings by Mr. T and four by Mrs. T. TE5 is still being nourished by the yolk it consumed shortly before hatching, but look for a feeding later today. Videos

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