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The status of Caspian Gull in Malta

01 March 2010 Comments Main paper Although gull-watching on Malta has been carried out by the authors for over 20 years, more systematic observations were under- taken during 2001-09. Sessions are held in most months, with more intensive effort from August to April, but especially during ... Read More

Identification of Caspian Gull

01 March 2010 Comments Main paper Abstract This paper deals with the identification of the Caspian Gull Larus cachinnans. The aim is to synthesise what is currently known about the identification of this species and discuss the appearance of proven and suspected hybrids. The paper is spli... Read More

Post-fledging behaviour of Choughs on Bardsey Island

01 June 1962 Comments Main paper T H E C H O U G H S {Pyrrhocorax pyrrhocorax) of Bardsey Island, off the coast of Caernarvonshire, have been a constant source of interest since the bird observatory opened there in 1953. O n e or two pairs have nested in most years and forty-seven young ... Read More

Albinism and melanism in birds

01 June 1962 Comments Main paper T H E STUDY OF heterochtosis or colour variations in the plumage of birds is a subject that the majority of field ornithologists either ignore entirely or regard with only mild curiosity. In the early years of the present century and before that, however,... Read More