See the ITS article on merganser ID, ageing, and sexing: https://cobirds.org/CFO/ColoradoBirds/InTheScope/82.pdf
Enjoy, Tony LeukeringWiley, CO -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/1222746228.439867.1563029605151%40mail.yahoo.com. For more options, visit https://groups.google.com/d/optout.
