Dunlin (Calidris alpina). First-winter bird foraging on coastal mudflats. Known in North America as the red-backed sandpiper.

- Image ID: H46EN8
Dunlin (Calidris alpina). First-winter bird foraging on coastal mudflats. Known in North America as the red-backed Stock Photo
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Dunlin (Calidris alpina). First-winter bird foraging on coastal mudflats. Known in North America as the red-backed sandpiper.
David Sewell / Alamy Stock Photo
Image ID: H46EN8
The spots on the breast reveal this to be a first- winter bird, i.e. a bird that hatched from an egg the previous spring.
Location: Pennington Marsh, Hampshire, UK