aythya affinis การใช้

• The "'lesser scaup "'( " Aythya affinis " ) is a small North American diving duck that migrates south as far as Central America in winter.
• Although generally hosting only small numbers of birds ( 244 species recorded ), the reservoir has attracted a considerable number of North American vagrant shorebirds and wildfowl, including a number of lesser scaup ( " Aythya affinis " ).