Feeding with other oystercatchers
Ens, B.J.; Cayford, J.T. (1996). Feeding with other oystercatchers, in: Goss-Custard, J.D. (Ed.) The oystercatcher: from individuals to populations. Oxford Ornithology Series, : pp. 77-104
In: Goss-Custard, J.D. (Ed.) (1996). The oystercatcher: from individuals to populations. Oxford Ornithology Series. Oxford University/Oxford University Press: Oxford. ISBN 0-19-854647-5. X, 442 pp., meer
In: Perrins, C.M. Oxford Ornithology Series., meer
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