David Penty British Library Black-headed Gull, Pembrokeshire, Wales Calls uttered by several black-headed gulls, recorded at Skomer Island on the Pembrokeshire coast, Wales, in May 1965.   The black-headed gull is a successful species, which has adapted to living in a wide variety of habitats both on the coast and inland. It feeds on a range of foods including insects, fish, worms, carrion, and seeds, as well as exploiting refuse tips in winter when other food is scarce. It is the smallest of all British 'common' gulls, and is an agile and slender bird that will often catch food in mid-air if scraps are thrown to it. Despite its name, the black-headed gull actually has a predominantly white head for most of the year and a dark chocolate brown head during the breeding season. This dark head plumage is used in display, when it is lowered or raised as a sign of aggression or surrender. The black-headed gull is a very vocal bird with a wide range of variations on the rather harsh 'kree-aaa' screech-like call. This can particularly be heard in breeding colonies, which may sometimes number over 20,000 individuals. Due to its immense adaptability, the breeding population in Britain and Ireland is over 200,000 pairs, which swells in winter to 3,000,000 individuals as resident birds are joined by others from northern Europe and Russia. sounds.bl.uk/022M-W1CDR0001426-2100V0 W1CDR0001426 BD21 1965/05 http://sounds.bl.uk/JISC ASR IPR STATUS LIST.xls Shove, Lawrence Skomer Island, Pembrokeshire: OS Grid Reference(172500,209500) Birds sound 1 1 1 1 1 0 Black-headed Gull, Pembrokeshi British Wildlife Recordings 1965 BL Product Identifier :W1CDR0001426 BD21 022 British Wildlife Recordings, Wildlife W1CDR0001426 AB 022M-W1CDR0001426-2100V0