Cornwall Bird Watching and Preservation Society. Twenty-first Annual Report, 1951. Edited by B. H. Ryves, A. G. Parsons and H. M. Quick. T H I S report follows its usual make-up, with systematic notes split up over 3 sections ; there are also separate tables of migrant dates for Cornwall and the Scillies. The following are included among the more interesting records from Cornwall. The Chough population does not appear to exceed 8 adults. Linnet incubating in September. Richard's Pipit identified by call in October ; another recorded in April. Several Blue-headed Wagtails in spring ; a female in September, notoriously difficult to identify, is recorded without comment, together with a male. A Waxwing was seen in December. Aquatic Warbler in October. Four or five Hoopoes in April and one in September. Several Rough-legged Buzzards. Osprey in October. Spoonbills wintering on the Tamar remained until March and were seen again from September to the end of the year. A Great White Heron on May 29th has already appeared in British Birds. Two or three Bitterns in January. Several Whooper and Bewick's Swans. A Bean Goose in February and March. Leach's Petrel in October. Red-necked Grebe in March. Grey Phalarope in January, February, November, and several in September. A Pectoral Sandpiper on May 31st and June 1st. Kentish Plover on May 31st. Avocets wintered on the Tamar until March and again in December. A Sooty Tern on July 31st. Sabine's Gull on July 22nd. Little Gulls in spring and autumn.