Age of a Bald Eagle Nest

Bald Eagle Nest: Probably pushing 100 years old — PLUS! Between 1963 and 1967 a bald eagle nest in my Barkley Sound Vancouver Island study area was annually used and produced 1 or 2 young each year. This leaning cedar tree was probably in excess of 300 years of...

Do Bald Eagles Reuse Old Nests

Do Bald Eagles Reuse the Same Nest Year After Year? The answer is commonly yes but the eagle territory often houses two or three alternative nests.  I use the word ‘territory’ here because this concept is really more important to eagles than the specific nest.  A...

Mating Behavior

MATING BEHAVIOR:   Bald eagles mate from the time of returning to the nest territory in early fall through egg laying, and sometimes a few months after. Like all raptors that I know, the mating takes place when the female is securely standing on a perch, usually...

Adult & Chick Sexual Size Differences

My measurements show that the bald eagles in our area, southern British Columbia, generally weigh between 5 and 12 pounds (closer average 7 – 11 pounds) . When I repeat this to my Alaskan colleagues they point out they have caught several 13 pound birds. And I...

Bald Eagle Nestling Age Classes

Bald Eagle Nestling Age Classes By: David Hancock: Bald Eagle Biologist Bald Eagle Nestling Age Classes: (Waiting for DH photos) Chicks- Colour/Size and Estimated Age ====================================== Class 1. White and Small. Never left alone for more than 2-3...

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