Pacific Black Duck

Anas superciliosa

The nominate sub-species of the Pacific Black Duck is called the Grey Duck in its native New Zealand. Other sub-species live in Australia, Indonesia and the Pacific islands. Duck and drake have similar plumage and can be distinguished from the introduced Mallard (with which they interbreed) by a green instead of blue speculum (wing-bar). There has been a massive decline in population partly due to hunting and partly to the increase in hybrids with the Mallard. (New Zealand also has a "Grey Teal" with a green speculum.)

The Australian sub-species of the Pacific Black Duck above, Anas superciliosa rogersi, also called the Australian/Australasian Black Duck, inhabits Australia and some of New Guinea and Indonesia
This Pacific Black Duck appears to have a blue speculum rather than green. (Also shows the lightish yellow legs of the species.)		Pacific Black Duck x Mallard hybrid

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American Black Duck

Mallard

Spot-billed Duck