Raptor Resource Project: Bald Eagle and Bird of Prey Cams

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March 3, 2024: Day Trip To Decorah

March 11, 2024 RaptorResource

Story and photos by Robin Brumm I had been to Decorah a couple of weeks ago, but Mom and DM2 were not incubating at that time. It was a busy week, and just when I was about to write a day trip, I found out that John saw Mom & DM2 were incubating on Friday. So I decided to wait on the day trip and head to Decorah again last Sunday to see if I could get some pictures of

March 8, 2024: News and NestFlix from around our nests!

March 8, 2024 RaptorResource

Congratulations to the Fort St. Vrain Eagles on their third egg! We haven’t passed the solstice yet, but spring has sprung: almost all of the birds we watch are busy laying eggs, tending eggs, protecting territory, courting, and/or copulating right now! We’ve been working hard and hope to have a few cool surprises for everyone in the weeks to come, but in the meantime, kick up your feet, grab a beverage, and soar into the weekend with our NestFlix raptor

March 4, 2024: NestFlix and News!

March 4, 2024 RaptorResource

It’s been a busy few days for everybirdy! We have eggs at Decorah North, Fort St. Vrain, and Trempealeau; an ever-changing group of female falcons trying to catch Newman’s attention (Lisa has so far chased them all off); Canada Geese looking at N1 (HM says absolutely not), and falcons showing up at every site we watch. I’m still trying to get band numbers at our sites, so please give me an email if you get one! We’re estimating hatch in

What is a brood patch?

March 4, 2024 RaptorResource

Daylight length, or photoperiod, strongly influences hormone production in birds. In the northern hemisphere, our story begins shortly after the winter solstice in December. As daylight length increases, a cascade of hormones causes birds’ gonads to swell in preparation for reproduction, egg-laying, and incubation. In this blog, we’ll discuss the role the brood patch plays in incubation and determining clutch size. How do bald eagles keep their eggs warm in subzero temperatures? They apply heat via a special area of

Won’t You Be My Neighbor?

March 1, 2024 RaptorResource

Bald Eagles play an important role in ecosystems. They stand on top of the food chain or web, are generalist hunters who consume and produce carrion, and are a keystone species: a species that is vital to the health of its ecosystem. We know and write about their trophic relationships, but we don’t often consider the importance of their nests to other species. Alternate, abandoned, or in use, large bald eagle nests stand for many years and serve as homes,

Leap Year eggs for two eagle couples!

February 29, 2024 RaptorResource

Congratulations to two eagle couples! Ma and Pa Jr. laid their first egg at Xcel Energy’s Fort St. Vrain nest tonight, and Mr. and Mrs. T laid egg #2 at Trempealeau! Ma frequently lays three eggs, so if she holds to her usual schedule, look for egg #2 on March 3 and egg #3 on March 6th. We don’t know how many eggs Mrs. T lays since this is our first year of data, but we’ll be watching! Tulsa has

Peek inside a bald eagle egg: 11 days!

February 29, 2024 RaptorResource

What do embryonic eagles look they look like as they develop and grow inside their eggs? Dr. Peter Sharpe from the Institute for Wildlife Studies developed a table of bald eagle embryonic development based on work done by Hamburger and Hamilton (1951). While not all bald eagle eggs hatch in 35 days, the stages of development look something like this… What happens between the third and the 11th day? When we last touched on the topic, our embryonic eagle had

Join us for our First Egg Fundraiser!

February 28, 2024 RaptorResource

We are holding our first egg fundraiser on Saturday, March 2nd. Join us for celebratory chats on our North Nest channel from 9 AM to 11 AM, 2 PM to 4 PM and 6 to whenever we stop! Follow this link to make a donation: https://www.raptorresource.org/support-the-raptor-resource-project/make-a-donation/. If you are reading this, you’ve watched our Bald Eagle cameras. I know they sometimes seem like entertainment and I can’t deny that I’ve laughed, peeked through my fingers, and sometimes cried while watching

Where are Golden Eagles 733, 834, and 833?

February 27, 2024 RaptorResource

The Raptor Resource Project is conducting a study on Golden Eagles (GOEA) to answer questions about their winter and summer grounds, migration route timing and fidelity, the familial ties among Golden Eagles wintering in our region, levels of lead and mercury, and the presence of HPAI antibodies. Does lead exert an influence on Golden Eagle populations? Have they been exposed to HPAI? What are their specific habitat requirements? While Western and Eastern Golden Eagles have undergone extensive research, there remains

February 26, 2024: News, NestFlix, and new cams!

February 26, 2024 RaptorResource

We know it is late February, but it really feels like spring has sprung! We’ve got eagles on eggs at the North nest and our new Trempealeau eagle cam, we’re eagerly awaiting eggs at Xcel Energy’s Fort St. Vrain nest, female falcons are lining up for Newman’s food gifts at GSB, the ice is entirely out on the Flyway, and we’re seeing and hearing spring arrivals everywhere! We’re also getting ready for our First Egg Fundraiser on March 2, chatting

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