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Please help ~ Great Coucal / Lesser Coucal?

HFCheung

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1# A A A Post at 25/06/2012 11:11  Show all
I think Iris colour is the best feather.  Lesser Coucal has black iris, Greater has red iris.

HF Cheung

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HFCheung

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2# A A A Post at 25/06/2012 20:59  Show all
The feature of iris colour is never mentioned in any field guide, as far as I know.  It is a latest invention by some clever birdwatcher.  I think I heard about it from Kwokjai.

[ Last edited by HFCheung at 26/06/2012 21:50 ]

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HFCheung

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3# A A A Post at 3/07/2012 11:31  Show all
In the initial edition, mistakes in the ID of Coucal were made.  I take full responsibility for that.  At that time I found it difficult to judge the size from the photo.  It was around that time that I realized iris colour as a field mark is the most useful for photos.  Several photos were replaced in the later edition.

HF Cheung

[ Last edited by HFCheung at 3/07/2012 11:32 ]

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