GENERAL BIOLOGY OF SPECIES

B alfour , E., A nderson , A. & D unnet , G. M. 1967. Orkney Cormorants—their breeding distribution and dispersal. B ernis , F. 1966. El Buitre Negro Aegypius monachus en Iberia. B oase , H. 1965. Movements of the Mute Swan in East Scotland. B oylan , P. J. 1967. Western Atlantic Fulmars on the East Yorkshire coast. B ray , R. P. 1966. Progress report on the Pheasant Study, 1965. B rown , L. H. 1965. Redwinged starlings of Kenya. B rown , L. H. 1965. Observations on Verreaux's Eagle Owl Bubo lacteus (Temminck) in Kenya. C aldwell , L. D. 1964. Dove production and nest‐site selection in southern Michigan. C ampbell , B. 1965. The Crested Tit. Forestry Commission leaflet No. 41. D owsett , R. J. 1967. Breeding biology of Lamprotornis mevesii (Wahlberg). E vans , P. R. 1966. Some results from the ringing of Rock Pipits on Skokholm, 1952–65. H arris , S. W., M orse , M. A. & L ongley , W. H. 1963. Nesting and production of the Mourning Dove Zenaidura macroura in Minnesota. H ewson , R. 1967. The Rock Dove in Scotland in 1965. H ilden , O. 1965. Zur Brutbiologie des Temminckstrandlaüfers Calidris temininckii (Leisl.). L ind , E. A. 1964. Nistzeitliche Geselligkeit der Mehlschwalbe Delichon u. urbica M acdonald , D. 1965. Notes on the Corn Bunting in Sutherland. M acmillan , A. T. 1965. The Collared Dove in Scotland. N elson , J. B. 1964. Some aspects of breeding biology and behaviour of the North Atlantic Gannet on the Bass Rock. N ewton , I. 1964. The breeding biology of the Chaffinch. N ickell , W. P. 1965. Habitats, nesting, and territory of the Catbird. N yholm , E. S. 1965. Ecological observations on the geese of Spitzbergen. P inder , R. 1966. The Cape Pigeon Duption capensis Linnaeus at Signy Island, South Orkney Iskands. R ichdale , L. E. 1965. Biology of the birds of Whero Island, New Zealand, with special reference to the Diving Petrel and the White‐faced Storm Petrel. R ogers , J. P. & K orschgen , L. J. 1966. Foods of Lesser Scaups on breeding, migration and wintering areas. RYDER, J. P. 1967. The breeding biology of Ross' Goose in the Perry River region, Northwest Territories. S andeman , G. L. 1963. Roseate and Sandwich Tern colonies in the Forth and neighbouring areas. S iegfried , W. R. 1967. The distribution and status of the Black Stork in southern Africa. S oikkeli , M. 1964. The distribution of the Southern Dunlin Calidris alpina schinzii in Finland. S peidel , G. 1966. Adelie Penguins in the Milwaukee County Zoo. S uetens , W. & G roenendael , P. V an . 1966. Ecología y conducta reproductora del Buitre Negro Aegypius monachus . T aylor , W. K. 1966. Additional records of Black‐tailed Gnatcatchers Polioptila melanura parasitized by the dwarf‐headed cowbird Molothrus ater V alverde , J. A. 1966. Sobre Buitres Negros en Andalucia. W aters , W. E. 1963. Observations on the Fulmar at St. Kilda. W aters . W. E. 1964. Observations on small petrels at St. Kilda. 1961–62. Scott.