Thanks for ajohn's comment.
I have tried to take picture by digiscoping but the result was not good due to long distance and the birds' movement. The attached photo only shows the distinctive white crown of the bird. Actually the white crown and the lateral green patches behind the eyes make the bird stands out sharply against the Eurasian wigeon.
I have no idea of how the hybrids look like and I understand that Amerian wigeon is an extremely rare possibility in HK but the white crown and the lateral green patches make me think of an American wigeon which I have seen before in California at an instant.
Hope more birders could locate and identify the bird.
25-2-2009 10:20 a.m.
Tsim Bei Tsui
