HKBWS Forum 香港觀鳥會討論區 - Powered by Discuz! Board

Subject: [Eagles] Imperial Eagle (Adult) - Gender ID Please [Print This Page]

Author: wilsondring Time: 15/01/2014 17:59 Subject: Imperial Eagle (Adult) - Gender ID Please

Is there a difference between male and female please?

12/01/2014 Mai Po

Thanks in advance

Image Attachment: WD1D2201.jpg (15/01/2014 17:59, 31.55 KB) / Download count 460
http://hkbws.org.hk/BBS/attachment.php?aid=17063

Author: badesc Time: 15/01/2014 22:02

Absolutely! But I don't think it is visible in the field/on plumage or bare parts.

Author: wilsondring Time: 16/01/2014 01:11

Quote:

Original posted by badesc at 15/01/2014 22:02
Absolutely! But I don't think it is visible in the field/on plumage or bare parts.

Appreciate it .. thanks Bart .. still on schedule for March?

And one more .. just by chance someone can tell the difference ..

Image Attachment: IMG_8570.jpg (16/01/2014 01:11, 49.91 KB) / Download count 501
http://hkbws.org.hk/BBS/attachment.php?aid=17066

Author: ajohn Time: 16/01/2014 08:52

The most obvious difference between male and female is size. Females are obviously larger than males. This can be very obvious when they are seen together, but I think would be difficult from a single photo of one individual.

Author: wilsondring Time: 16/01/2014 20:49

many thanks ajohn .. where i appreciate that you probably wanted two adults together, i only have a shot of the juvenile and adult together....

Image Attachment: WD1D2231.jpg (16/01/2014 20:49, 67.61 KB) / Download count 454
http://hkbws.org.hk/BBS/attachment.php?aid=17085

Author: ajohn Time: 17/01/2014 08:58

It looks like the immature is male and the adult female (although the apparent size difference may be partly due to the different angle). The size difference should be apparent even when the birds are immature (birds grow very little after they fledge).
I think that the adult Imperial that I have been seeing regularly at Mai Po this winter is female - it often seems huge!

Welcome to HKBWS Forum 香港觀鳥會討論區 (http://hkbws.org.hk/BBS/)