Common Merganser
Mergus merganser · Lifer #150
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Photos: 4 Forms: 2 (F/americanus, M/americanus)
North American (americanus)
US-AZUS-MDUS-VA
2ISSF, Eurasian and North American indicate their respective areas. Plumage varies, with female more-or-less similar but eclipse male mirroring female in non-breeding (JUN-AUG). M/F differ, with males sporting a green head/beck and whiter body and females a brown head/neck with duskier body.