Attributes / relations provided by
♦ 1Seasonal and geographical variations in the diet of Common Guillemots Uria aalge off western Scotland, D J Halley, N. Harrison, A. Webb and D.R. Thompson, SEABIRD 17: 12-20
♦ 2Offshore diet of grey seals Halichoerus grypus near Sable Island, Canada, W. D. Bowen, G . D. Harrison, Mar. Ecol. Prog. Ser. 112: 1-11, 1994
♦ 3An estimate of summer food consumption of six seabird species in Iceland, K. Lilliendahl and J. Solmundsson, ICES Journal of Marine Science, 54: 624630. 1997