THE BIRDS OF THE PRIBILOP ISLANDS. 



363 



Species which prohabhj breed (9). 



Ceppliua columLa. 

 Larus scliistisagus. 

 Xema sabinii? 

 Anas boschas. 

 Histriouicus histrionicn8. 



Eniconetta stelleri? 

 Crymophilus fulicarius? 

 Asio accipitrinus. 

 Nyctea nyctea? 



Of regular occurrence as migranis, evidently an incomplete list. 



Nettiou carolinense Uiicoiiimon. 



Somateria v-nigra Common. 



Branta canadensis minima Few. 



Crymophilus fulicarius Common. 



Phalaropus lobatus Common. 



Limosa lapponic.i baneri Common. 



Heteractitis incanus Common. 



Numenius borealis Few. 



Charadrius dominions fulvus Fairly common. 



Areuaria interpres Common. 



THE GEOGRAPHICAL DISTRIBUTION OF PRIBILOF BIRDS. 



The Holarctic region comprises all of the Northern hemisphere except the south- 

 ern portions. It is divisable into the following subregions: PalsBarctic, Europe and 

 Northern Asia; Aleutican, North Pacific and adjacent shores; Nearctic, North 

 America. 



American {Nearctic) forms occurring on the islands (IS species). 



Colymbus holboellii Migrant. 



Merganser americanus Migrant. 



Nettion carolinense Migrant. 



Anser albifrons gambeli Migrant. 



Branta canadensis minima Migrant. 



Olor colnmbianus Migrant. 



Grus canadensis Eare, accidental . 



Tringa niaculata Twice. 



Ereunetes pusillus Once. 



Tetanus flavipes Once. 



Numenius hudsonicus Once. 



borealis Migrant. 



Aegialitis semipalmata Once. 



Falco peregrinus anatum Migrant. 



rusticolus gyrfalco Few, migrant. 



Hirundo erythrogastra Twice, accidental. 



Antbus pensilvauicus Once, migrant. 



Merula migratoria Once, accidental. 



Anas penelope Few, accidental. 



Tringa damacensis Once, migrant. 



Limoaa lapponica baueri Migrant. 



Asiatic (Palaearctic) forms, none breeding.' 



Charadrius dominicus fulvus.. . Migrant. 



Arenaria interpres Migrant. 



CuchIus canorus telephonus . . . Once, accidental. 



Pacific (Aleutican) forms (55 species, 18 breeding). 



Gavia adamsii Migrant. 



Lunda cirrhata Breeds. 



Fratercula corniculata Breeds. 



Cyclorrhynchus psittaculus Breeds. 



Siraorhynchus cristatellus Breeds. 



pusillus Breeds. 



Synthliboramphus antiquus Doubtful. 



Cepphus columba Breeds? 



Urla troile californica Breeds. 



lomvia arra Breeds. 



Rissa tridactyla pollicaris Breeds. 



brevirostris Breeds. 



Larus barrovianus Breeds. 



glaucescens Breeds. 



schistisasfus Doubtful. 



Diomedea albatrus Migrant. 



Fulmarus glacialis rodgersii Breeds. 



Oceanodroma furcata Breeds? 



Phalacrocorax urile Breeds. 



Somateria v-nigra Winter. 



Philacte canagica Migrant. 



Tringa ptilocuemis Breeds. 



Heteractitis incanus Migrant. 



Haliieetus leucocephalus alascensis.. Accidental. 



Leucosticte gr iseonucha Breeds. 



Passerina townsendi Breeds. 



Ammodramus sandwichensis Accidental. 



Calcarius lapponicus alascensis Breeds. 



Troglodytes alascensis Breeds. 



' It is of course understood that these birds are found here at about the most eastern portion of 

 their range, while of the 18 American forms they here occur at about the most western part of their 

 habitat. 



