The oystercatchers are a group of waders; they form the family Haematopodidae, which has a single genus, Haematopus.
2.
The oystercatchers ( Haematopodidae ) are large and noisy plover-like birds, with strong bills used for smashing or prising open molluscs.
3.
The black oystercatcher is the only representative of the oystercatcher family ( Haematopodidae ) over most of its range, overlapping slightly with the American oystercatcher ( " H . palliatus " ) on the coast of Baja California.
4.
The island has a significant breeding colony of over 4, 000 pairs of lesser black-backed gulls ( " Larus fuscus " ), 400 pairs of herring gulls ( " Larus argentatus " ), 2 pairs of great black-backed gulls ( " Larus marinus " ) and varying numbers of common shelduck ( " Tadorna tadorna " ) and Eurasian oystercatchers ( " Haematopodidae " ).
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