Three images of two individuals from different localities (Khao Yai and Nan), that appear to be the same species, though completely unlike any other Aythma species. Closest would be Athyma selenophora, but this one differs in several significant ways, and can surely not be the same species?
Image 1. Khao Yai
Attachment 24803
Image 2 Khao Yai (underside)
Attachment 24805
Image 3. Nan province
Attachment 24804
