Diet of black-headed gulls Larus ridibundus on emerged intertidal areas in the Tagus estuary (Portugal): predation or grazing?
Moreira, F. (1995). Diet of black-headed gulls Larus ridibundus on emerged intertidal areas in the Tagus estuary (Portugal): predation or grazing? J. Avian Biol. 26(4): 277-282. https://dx.doi.org/10.2307/3677041
In: Journal of Avian Biology. Munksgaard: Copenhagen. ISSN 0908-8857; e-ISSN 1600-048X, meer
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