The variable oystercatcher (Haematopus unicolor), The variable oystercatcher is a large heavily-built shorebird. Adults have black upperparts, their underparts vary from all black, through a range of smudgy intermediate states to white

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Photo credit: © Penta Springs / Alamy / Afripics
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Keywords: adults, black, haematopus, heavily-built, intermediate, large, oystercatcher, range, shorebird, smudgy, states, underparts, unicolor, upperparts, variable, vary, white