Bald Eagle Nestling Age Classes-1

Saturday, September 08 2007 @ 01:21 AM EDT

Contributed by: davidh


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 minutes 1 - 10 day days
--------------------------------------------
Class 2.
Starting Grey and Small. In warm
weather left alone 1-10 minutes 1 - 3 weeks old
-------------------------------------------
Class 3
Grey sit up in nest. Can be left
alone in warm weather 10-+ min. 4-5 weeks old
--------------------------------------------
Class 4
Brown feather just starting to
show in a few rows 6-7 weeks old
-------------------------------------------
Class 5
Brown feathers showing as
dominant tracks 8-9 weeks old
-------------------------------------------
Class 6
Brown and full size body:
No grey down showing. 10-12 weeks old
-------------------------------------------
Class 7
Fledglings: Uniformly brown:
Chicks fledge at 80 to 90 days of age.
==================================



Hancock Wildlife Foundation
http://archive.hancockwildlife.org/article.php/20070907222114337