31 Cool Bird Facts #25 – Black-bellied Whistling-Duck

Black-bellied Whistling-Ducks [Dendrocygna autumnalis] are one of the oddest North American ducks. These “tree ducks” do nest in trees and will use nest boxes much like the more common Wood Ducks. However, these ducks share similarities with geese and swans with “their lack of sexual dimorphism, relatively long-term pair bonds, and lack of complex pair-forming

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