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Fish orientation in the bill of Black Guillemots Cepphus grylle

by Ewins, P.J.
Published in Bird Study (1988)

The diet of black guillemots Cepphus grylle in Shetland

by Ewins, P. J.
Published in Ecography (1990)

Possible effects of local enrichment by gulls on feeding‐site selection by wintering Barnacle Geese Branta leucopsis

by BAZELY, D. R., EWINS, P. J., McCLEERY, R. H.
Published in Ibis (1991)