To cuckooroller: Thanks Steve,vanderschelden::2009-02-01 7:44
Thank you very much for your reply.

I guess evolutionary relatedness in terms of genealogy is one thing. Another thing is for instance to compare both birds (Black-winged and Black-shouldered) empirically through observations, for instance through photos or even better on the field.

Since you mentioned that the Yellow-billed kite hasn't been treated unequivocally by different authorities, is this due to the fact that one authority goes for genealogy and another for morphology. Or is it so that morphology or description through observation is just a first step that should be verified through genealogical research?

I'm a member of the birdpix site you mentioned.
The Pygmy falcon is definitely another bird of prey specie. Identification of bird of prey species is really difficult for me. In addition there's the taxonomy. For instance it's difficult to distinguish kites, falcons, kestrels and even eagles.

Are there also sites instead of books where you search through for instance Howard & Moore. Probably a paying site.
Namibia
Title: Black-winged kiteCanon EOS 1D Mark III
Black-winged kite (44) *
vanderschelden Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2553 W: 74 N: 7464] (30441)
[Only registered members may post.] [Flat View] [Translate]
ThreadUsername Date
To cuckooroller: Thanks Steve, vanderschelden Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2553 W: 74 N: 7464] (30441)::2009-02-01 07:44
:Re: To cuckooroller: Thanks Steve, cuckooroller Gold Star Critiquer [C: 185 W: 0 N: 0] (0)::2009-02-01 08:57
::Re: To cuckooroller: Thanks Steve, vanderschelden Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2553 W: 74 N: 7464] (30441)::2009-02-01 10:44
:::Re: To cuckooroller: Thanks Steve, cuckooroller Gold Star Critiquer [C: 185 W: 0 N: 0] (0)::2009-02-02 00:47