wkcheng

A flock of House Swift was seen at Long Valley this afternoon (2010.01.09). There was at least 60 - 70.

However, I found there were swifts with white underwing. One of them was captured below.

DSC_4225a.jpg (81.73 KB)

9/01/2010 21:38

Also a House Swift or other species?

Thank you for assistance in identification.

wkcheng

Thanks both kmike and ajohn for the identification and explanation.