age progression

More Owls, Turkey Vultures plus a Third Year Bald Eagle

By Mia McPherson|April 5th, 2016|Categories: Bald Eagles, Birds, Box Elder County, Short-eared Owls, Turkey Vultures, Utah|Tags: age progression, Asio flammeus, Athene cunicularia, Bald Eagle, Burrowing Owl, Cathartes aura, Haliaeetus leucocephalus, pair, preened, roused, Short-eared Owl, spread wing posture, sunning, thermoregulation, third year, Turkey Vulture|

I mentioned in my post about Short-eared Owls yesterday that I saw Burrowing Owls, Turkey Vultures and a third year Bald Eagle juvenile in northern Utah so I thought I would share a few more images form the northern Utah excursion.

Bald Eagles – Age Progression from one to five years old

By Mia McPherson|February 16th, 2011|Categories: Bald Eagles, Birds, Davis County, Farmington Bay Waterfowl Management Area, Utah|Tags: 80 inch wingspan, adult, age progression, aging, aging bald eagles, Bald Eagle, bald eagle age progression, bill, bird ID, development, eagles, first year, fourth year, growth, growth stages, Haliaeetus leucocephalus, plumage, plumage phase, second year, third year, under wing|

A simple guide to aging Bald Eagles by their plumage development, legs and their bills with images showing the age progression.