Sunday, July 17, 2016

Underwing plumage

The underwing plumage of two Western Ground Parrot specimens from the Western Australian Museum are shown below.

This is the adult female (roadkill), specimen no. 27142, shown in the previous blog entry. The blue-green marginal coverts are a colour not visible elsewhere on the bird's plumage.

This bird, specimen no. 27143, a male, found headless, lacks the blue-green marginal coverts, but this is perhaps an indication of a stage of moult. It is not a male/female differentiaton feature. However, the width of the pale underwing stripe may be.

The images were taken with permission from the WA Museum and are used here with permission.

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