American Black Duck Vs Mallard

American black duck vs.

American black duck vs mallard. Mallard numbers grew exponentially in the east and by the 1960s the greenhead had become the most abundant duck in the atlantic flyway. Posted on january 6 2016 by josh. Both species will cross with mallards. Females often have dull olive or dusky bills rather than the brighter orangeyellow of mexican ducks.

Instead the edges are black. American black duck x mallard hybrids typically retain blackish body plumage although they are variable and can appear similar to mallard x mexican duck hybrids. Note the bill shape and color and pale down the top of the folded wings. You already know that birders are an odd bunch but you may not know that they are even more so on new years day.

Bill color is a useful field mark. Female mallard has an orangish bill with variable dark markings. If white bars are present on the black duck they are very faint. But take a second look through a group of brown ducks to notice the dark chocolate brown flanks pale grayish face and olive yellow bill of an american black duck.

On fresh water feeds mainly on plant material including seeds leaves roots berries. Compare to both the black duck left and mallard back in the picture. The american black duck is found in habitats like the mallards but tends to be somewhat warier of humans and so favors more secluded areas. A close relative of the mallard the black duck is better adapted to wooded.

They often flock with the ubiquitous mallard where they look quite similar to female mallards. The american black duck hides in plain sight in shallow wetlands of eastern north america. Unfortunately the growth of eastern mallard populations coincided with comparable decreases in the abundance of american black ducks which declined by more than 50 percent between the 1950s and 1980s. Note the more subtle differences in the breast sides tail wings back etc.

Female mallard the minnesota ivory gull a sleigh assisted bird. Mallards have distinct white wing bars on both edges of the blue speculum the band across the wing. Mottled duck tends to be darker than the mallard and lighter than the black duck. Heres a comparison between the hybrid and its pal an american black duck.

Though outnumbered by mallards at all times of the year here black ducks become more common relative to the mallard in migration seasons and in winter when more northern breeding populations of black ducks migrate south. The black duck usually has no white wing bars along the speculum. For more photos of this bird see david rupperts photosof this individual. Female mallards mottled and american black ducks are similar in appearance.

Ranges of the mottled duck southern us and the american black duck do not overlap.

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