INTRODUCTION. 29 



H. Irregular or casual Visitants from the Western Province. 



1. Sialia arctica. (WinterJ 7. Pica hudsonica. (Winter.) 



2. Myadestes townsendL (Winter.) 8. Sayornis sayl. (Season not known.) 



3. Rhynohophanos maccowni. (Winter.) 9. Bubo subarcticus. 



4. Zonotrichia auerula. (Spring and 10. Falco mexicanns. (Fall.) 



falU 11. Buteo krideri. (Summer.*) 



5. Junoo oregonus. (Pall.) 12. Buteo oalurus. (Spring.) 



6. Scolecopfaagus cyanocephalus. (Win- 13. Archibuteo ferruginous. (Fall.) 



terj 14. Anas cyanoptera. 



I. Regular Residents or Visitants which intrude from the Westward, 

 a. Observed only in Summer. 



1. Vireo belli!. (Breeding.) 



2. Spizella pallida. (Breeding.) 



3. Xanthocephalus xanthocephalus. (Breeding.) 



4. Chordeiles henryi. (Breeding?) 



b. Observed only in Winter, or during migration. 



5. Coccothraustes vespertinus. 



6. Ammodramus lecontei. (Breeding?) 



7. Colymbus californicus. 



c. Observed irrespective of season. 



8. Chondestes grammaca. (Breeding.) 



9. Sturnella negleota. (Breeding.) 



10. Buteo swainsoni. (Breeding.) 



11. Pediocaetes campestris. (Breeding.) 



J. Stragglers and doubtful species, the former including those of 



which not more than one specimen has been taken or observed. 



\. Sialia arctica. W. 8. Buteo calurus. W. 



2. Myadestes townsendi. W. 9. Buteo krideri. N. W. 



3. Parus hudsonicus. N. 10. Buteo harlani. 8. 



4. Junco oregonus. N. 11. Asturnia plagiata. S. 



5. Pasaerina ciris. S. 12. Ardea occidentals. 8. 



6. Pica hudsonica. N. 13. Pelecanus fuscua. 8. 



7. Sayornis sayi. W. 14. Phalacrocorax mexicanus. S. 



* Probably breeding. 



