Lifting Capacity of Eagles

Eagles are predators but they have a very small lifting capacity.  Many times I have described our experiments and field observations on what eagles can lift. Generally a male can lift about 1.5 pounds and a female up to 2.5 to 3 pounds — the latter if there is...

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...