58 SEA-BIRDS 



single colonies are not included unless these are of great import- 

 ance. 



Fulmar, ^.100,000 in Britain, including St. Kilda, in 1949 (and five-yearly 

 estimates since eighteen-seventies ; Fisher, 1952): c.350 in Norway in 1947 

 (P. Valeur, 1947): c. 200,000 in West Greenland (F. Salomonsen, 1950): 

 c.200,000 on Bear I. in 1932 (Bertram and Lack, 1933): c. 100,000 + at 

 Cape Searle, Baffin I. in 1950 (V. G Wynne-Edwards, 1952). 



North Atlantic (Corys) shearwater, c. 2 0,000 on the Salvages, pertaining to 

 Madeira, in 1939 (R. M. Lockley, 1952). 



Great {Tristan great) shearwater, world population between 2 and 2^ million, 

 all on Tristan da Gunha in 1949-50 (M. K. Rowan, 1952). 



Cahow, world population all on Bermuda where 13 or 14 nests found and 

 1 95 1 population "perhaps of the order of 100 adult birds, there may be 

 fewer, but there are not likely to be more." (Murphy and Mowbray, 1951). 



Leaches petrel, c.2,000 in Britain; this estimate contains a guess of 1,000 

 nests on St. Kilda in 1931 which is unreliable since not all the St. Kildan 

 islands on which the species nests were visited (Atkinson and Ainslie, 

 1940): C.I 3,000 in Newfoundland in 1942-45 (Peters and Burleigh, 195 1). 



American white pelican, world population c 15,000 in 1932 (B. H. Thompson, 

 1932). 



North Atlantic gannet, world population <:.83,ooo in 1939, of which (;. 70,000 

 in Iceland-Faeroes-Britain; in 1949 c.82,000 in Iceland-Faeroes-Britain 

 (Fisher and Vevers, 1943-44, 1951). See p. 83. 



Double-crested cormorant, Population entire n.e. subspecies P. a. auritus, 

 c.20,000 in 'twenties (H. F. Lewis, 1929); re-established on eastern sea- 

 board U.S. t.1925 (E. H. Forbush, 1925, H. L. Mendall, 1936); ^900 

 in 1 93 1 (Norton and Allen, 1931), over 10,000 in 1944 (A. O. Gross, 1944). 



European cormorant, in Holland c. 1,200 in 1926, c.2,600 in 1934, <;.4,ooo in 

 i937» 4>622 (peak) in 1940, 4,359 in 1941 (van Ijzendoorn, 1950); in 

 Belgium 30 in 1950 (R. Verheyen, 1951); in North America 1,086 in 

 1940 (H. F. Lewis, 1941). 



Great skua, }ust over 100 in the Faeroes in 1942, c.200 in 1946 (K. Williamson, 

 1945b, 1948, L. Ferdinand, 1947); c. 1,000 in Great Britain (all Shetland 

 and Orkney) around 1 946 (R. Perry, 1 948, Royal Society for the Protection 

 of Birds watchers and other sources). 



Ring-billed gull, c. 1,750 in Gulf of St. Lawrence in 1940 (H. F. Lewis, 

 1941b.). 



Common gull, ^7.500,000 in Denmark in 1939 (P. G6roudet, 1946); 20,221 



