| Joined: | Wed Apr 18th, 2012 |
| Location: | United Kingdom |
| Posts: | 4189 |
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Really? I thought plumage was the indicator!
One learns something every day. Just as long as the Geese know then I guess it don't matter!
Quite a few species of birds have the two sexes identical to all but the trained eye. For example the Goldfinch has red face markings that extend beyond the eye in males but stop at the eye in females. There may be such a tweak of nature in Canada geese that I am not aware of...but always thought the female was smaller. Most of the corvids are the same for both sexes with size being the only, or most obvious, differentiator.
And don't get me started on goosanders, mergansers and immature of each species, not to mention eclipse phases or individual bird variations .....a right buggers muddle.
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Last edited on Thu Mar 29th, 2018 05:33 by Eric
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Eric