Decorah North Eagles and Blogs

Your questions, answered! Does DM2 learn from Mom? Will just one copulation fertilize all of Mom’s eggs?

Group of people look through binoculars 175x175 - Your questions, answered! Does DM2 learn from Mom? Will just one copulation fertilize all of Mom's eggs?

As part of our first egg fundraiser on February 28, John took questions from watchers over at A follower asked whether DM2’s maturity was the result of learning from Mom or his instincts maturing as he matures. We often talk about learning and instinct, as opposed to learning versus instinct. While instinct appears to take a bigger role in eagle behavior, eagles also learn. John’s answer: Much of an eagle‚Äôs behavior is innate. Instinct guides a wide range of

March 10: Decorah, Decorah North, Xcel Fort St. Vrain, The Flyway, Odds and Ends!

March 9, 2020: DNF in the rain at Decorah North

It’s a NestFlix megaroll! We have videos from Decorah, Decorah North, Fort St. Vrain, and the Flyway, plus great bird news from Guam and Hawaii! This is a great time to start watching the Flyway – but keep your eyes peeled, since spring migration happens very quickly! Today marks about 24 days until hatch in Decorah, 17 days until hatch at Decorah North, and 13 days until hatch at Xcel Fort St. Vrain – although remember, it could come a

Proposed changes weaken Migratory Bird Treaty Act

Black-bellied plover, Bald eagle with American pelicans, White egret, Bufflehead duck

Bald and Golden Eagles are protected by the Bald and Golden Eagle Act. Endangered species are protected by the Endangered Species Act. But the vast majority of birds in the United States are protected only by the Migratory Bird Treaty Act. There is currently a federal proposal to change the definition of ‘take’ under the Act. It sounds boring, right? But preserving the definition as it stands is important to the future of our birds. To provide feedback on the

March 5, 2020: Decorah, Decorah North, GSB

March 5, 2020: Mom Decorah steps carefully into the egg cup

Spring is in the air! We have Nestflix from Decorah, Decorah North, and GSB tonight, but first I want to encourage people to start watching the Flyway cam at Winter finally arrived in February, putting a damper on Flyway activity. But it looks like the ice is starting to go out and birds are beginning to move north! The spring migration is much quicker than the fall one, so you’ll want to keep track of the ice to catch

Peek inside a bald eagle egg: 4 days!

An embryonic bird at 33 hours

As of this writing, the last Decorah egg is 22 hours old, the last Decorah North egg is 9 days, 23 hours old, and the last Fort St. Vrain egg is 12 days, 22 hours old. What do embyronic 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

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