Tag Archives: FAQ

When will we be able to tell the sex of the eaglets?

April 28, 2020: D34, D36, and D35 seeking shade at N2B

TLDR: We won’t, but read on to learn why!When will we be able to tell the sex of the eaglets? We get asked this question every year. While most of us make private guesses, we don’t make them official – in no small part because we’ve been wrong before! Keep in mind that age is a bigger factor than sex in weight gain and size early in nest life. Sexual dimorphism begins to appear in some variables after about 20

Why don’t Mom and DM2 DO something about all of those beak-bonking battles?

April 16, 2020: Decorah Eaglets

One of the most common questions we’re getting right now is something along the lines of ‘Why don’t Mom and DM2 DO something about all of those beak-bonking battles?‘ We recognize that eagle parents are bonded to their children, so why don’t they stop potentially harmful behavior? It’s umwelt time, so let’s put our eagle heads on and think through the question! Competition is an important part of eagle ‘society’, but eagles also need to surrender food to hungry mates

Your questions, answered: Will the third egg hatch? Why did the first two eaglets hatch so close together?

April 7, 2020: D34 and D35

It’s April 7 and a lot of you are wondering about the third egg. Will it hatch? It could! It has been almost 34 days since Mom laid her third egg, which is 33 days and 20 hours old as I write this. But her third egg almost always hatches 36 to 37 days after it was laid. If she goes 36 days, which is fairly common, hatch should happen on April 9th. We could see pip later today or

#Musings: Place, stories, and eagle intelligence.

November 7, 2017: Dad Decorah

Place, as writer Thom Van Dooren points out, can be understood as an embodied, lived, and meaningful environment. Bald eagles clearly have a sense of place. Their territories are woven with layers of attention, meaning, and experience: spots to hunt, perch, and hide from the weather, materials to build and replenish their nests, and mates and family to bond with and care for. Eagles have neighbors beyond counting – squirrels, mice, raccoon, rabbits, muskrat, mink, coyotes, deer, prairie dogs, trout,

Egg Colors and Shapes

eggs 175x175 - Egg Colors and Shapes

The Chicago Peregrine Program inspired me to write a quick blog on the colors and shapes of eggs. Bald eagles have white eggs, peregrine falcons have eggs that range from light cream through brick red, and red-tailed hawks have pale eggs that are lightly splotched with brown. How and why do the birds we watch lay differently-colored and shaped eggs? In general, female birds inherit egg colors and patterns from their female parents. Egg-shell is made primarily of calcium carbonate,

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