Oystercatchers | ||||||||||||
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American Black Oystercatcher
(Haematopus bachmani) |
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Scientific classification | ||||||||||||
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Magellanic Oystercatcher H. leucopodus Blackish Oystercatcher H. ater American Black Oystercatcher H. bachmani American Oystercatcher H. palliatus Canarian Black Oystercatcher † H. meadewaldoi African Black Oystercatcher H. moquini Eurasian Oystercatcher H. ostralegus Australian Pied Oystercatcher H. longirostris Chatham Island Oystercatcher H. chathamensis Variable Oystercatcher H. unicolor Sooty Oystercatcher H. fuliginosus |
The Oystercatchers are a group of waders; they form the family Haematopodidae, which has a single genus, Haematopus. They are large obvious and noisy plover-like birds, with strong bills used for smashing or prising open molluscs.
In some species, the bill shape varies according to the diet. Those birds with blade-like bill tips prise open or smash mollusc shells, and those with pointed bill tips tend to probe for annelid worms.
They are found on coasts worldwide apart from the polar regions. They are all-black, black and white or brown and white in appearance.
Their eggs are laid in a shallow scrape on shingle. Oystercatcher eggs are grey and speckled, providing camouflage against the grey rock background. They are pointed at one end. Contrary to popular belief, the purpose of this is not to provide space for the chick's long beaks (their long beaks develop after hatching). The pointed shape is thought to prevent the eggs from rolling down a steep slope.
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Eurasian Oystercatcher
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American Black Oystercatcher (Haematopus
bachmani)
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American Oystercatcher (Haematopus
palliatus)
Image from 'Birds of America" J.J. Audubon |
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Oystercatchers chasing crabs, Galapagos
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Oystercatchers nesting, Galapagos
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Oystercatchers swapping places on nest,
Galapagos
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Black Oystercatcher at the
Monterey Bay Aquarium
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External links
- ARKive - images and movies of the oystercatcher (Haematopus ostralegus)
- Oystercatcher videos on the Internet Bird Collection