594 BRITISH GENERAL MIGRATORY MOVEMENTS 



Bee-eater. 

 Tengmalm's owl. 

 Scop's owl. 

 Snowy-owl. 

 Sandgrouse. 

 Brunnich's guillemot. 

 Ivory-gull. 



Creamcoloured-courser. 

 Pratincole. 



Nutcracker(two forms). 



Hornemann's redpoll. 



Coues's redpoll. 



Citril-finch. 



Parrot-crossbill. 



Snow-finch. 



Pine-bunting. 



Yellowbreasted-bunting 



Siberian meadow-bunt- 

 ing. 



Largebilled reed-bunt- 

 ing (two forms). 



Black-lark . 



White's thrush . 



Dusky-thrush. 



Blackthroated-th rush. 



Desert-wheatear (two 

 forms). 



Blackeared-wheatear 

 (two forms). 



Pied-wheatear. 



Isabelline-wheatear. 



Black-wheatear. 



Thrush-nightingale. 



Greenish-warbler. 



Eversmann's warbler. 



Pallas's warbler. 



Radde's bush-warbler. 



Cetti's warbler. 



Savi's warbler. 2 



Bartram's sandpiper. Little-crake. 

 Pectoral-sandpiper. Baillon's crake. 

 Bonaparte's sandpiper. Goshawk. 

 Buffbreasted-sandpiper. Iceland-falcon. 

 Broadbilled- sandpiper. Lesser-kestrel. 

 Redbreasted-sandpiper. Redfooted-falcon. 

 Blackwinged-stilt. Snow-goose. 



Crane. Ruddy-shelduck. 



LIST II. 



Pallas's grasshopper- 

 warbler. 



Lanceolated-warbler. 



Orphean-warbler. 



S ardinian- warbler. 



Subalpine- warbler. 



Rufous-warbler (two 



. forms). 



Lesser grey-shrike. 



Masked-shrike. 



Brown-flycatcher. 



Collared-flycatcher. 



Redrumped-swallow. 



Needletailed-swift. 



Egyptian-nightjar. 



Rednecked-nigh tj ar. 



Hawk-owl (two forms), 



Eagle-owl. 



Great spotted-cuckoo. 



Yellowbilled-cuckoo. 



Blackbilled-cuckoo. 



Rufous turtle-dove. 



Whiskered-tern. 



Gullbilled-tern. 



Caspian-tern. 



Sooty-tern. 



Wedgetailed-gull. 



Bonaparte's gull. 



Mediterranean black- 

 headed-gull. 



Great blackheaded- 

 gull. 



Blackwinged-pratin- 

 cole. 



Caspian-plover. 



Little ringed-plover. 



Killdeer-plover. 



American golden- 

 plover. 



Asiatic golden-plover. 



Sociable-plover. 



American-stint. 



Baird's sandpiper. 



Seinipalmated-sand- 

 piper. 



Spotted-sandpiper. 



Solitary-sandpiper. 



Yellowshank. 



Greater-yellowshank. 



Marsh-sandpiper. 



Eskimo-curlew. 



Slenderbilled-curlew. 



Great-bustard. 



Little-bustard. 



Macqueen's bustard. 



Carolina-crake. 



Spotted-eagle. 



Black-kite. 



Griffon-vulture. 



Egyptian-vulture. 



Surf-scoter. 

 Purple-heron. 

 Little-bittern. 1 

 Night-heron. 

 White-stork. 

 Black-stork. 

 Whitebilled northern- 

 diver. 



Lesser whitefronted- 

 goose. 



Redbreasted-goose. 



Bluewinged-teal. 



American-wigeon. 



Redcrested-pochard. 



Ferruginous-duck. 



Buffleheaded-duck. 



Harlequin-duck. 



Steller's eider. 



King-eider. 



Hooded-merganser. 



Great white-heron. 



Little-egret. 



Buffbacked-heron. 



Squacco-heron. 



Flamingo. 



Madeiran forktailed- 

 petrel. 



Wilson's-petrel. 



Frigate-petrel. 



Little dusky - shear- 

 water. 



Mediterranean great- 

 shearwater. 



Schlegel's petrel. 



Capped-petrel. 



Collared-petrel. 



Bulwer's petrel. 



Blackbrowed-albatros. 



X. MOVEMENTS DUE TO SEVERE WEATHER 



During winter any sharp spell of frost or heavy fall of snow will occasion extra migration 

 of ground-feeding and indeed most birds both resident and winter visitors. The volume of a 

 movement depends upon the severity of the climatic variation which occasions it. The birds 



1 These, and probably others, may be classed as regular birds of passage. 



2 Formerly a summer visitor. 



