92 



PACIFIC COAST AVIFAUNA 



No. 10 



RESIDENT 



1. Otus a. cineraceus 



2. Dryobates arizonae 



3. Melanerpes f. aculeatus 



4. Tyrannus vociferans 



5. Aphelocoma woodhousei 



6. Aphelocoma s. arizonae 



7. Aimophila r. scotti 



8. Vireo h. stephensi 



9. Baeolophus i. griseus 



10. Baeolophus wollweberi 



11. Polioptila c. obscura 



The Upper Sonoran zone occupies a comparatively limited area in the state, 

 and the list of birds confined to it solely is a short one. In southern Arizona this 

 zone is in few places of greater width than is comprised in the belt of live-oak- 

 covered foothills between the higher mountains and the valleys below. Of the 

 seventeen species listed as peculiar to this zone, eleven are preeminently birds 

 of this live-oak association, as follows : Otus J. cineraceus, Dryobates arizonae, 

 Melanerpes f. aculeatus, Tyrannus vociferans, Myiarchus I. olivascens, Aphelo- 

 coma ivoodhousei, Aphelocoma s. arizonae, Vireo h. stephensi, Baeolophus i. 

 griseus, Baeolophus ivollzueberi, Polioptila c. obscura. 



Of the remaining six, Cynanthus latirostris, Myiochanes r. richardsoni, and 

 Vireosylva g. swainsoni are to a great extent denizens of the sycamores along 

 the canon streams in the foothills, Icterus parisorum and Aimophila ruficeps 

 scotti frequent the agave and scrub-oak covered hillsides, while Vireo licinior 

 is in the denser brush of the same region. 



SPECIES IN THE TRANSITION ZONE AND HIGHER, MORE NEARLY RELATED TO THE 

 ROCKY MOUNTAIN FAUNA TO THE NORTH WARD 



1. Chordeiles v. henryi 



2. Nuttallornis borealis 



3. Zonotrichia 1. leucophrys 



4. Zamelodia m. melanocephala 



5. Piranga ludoviciana 



6. Tachycineta t. lepida 



7. Lanivireo s. plumbeus 



1. Dendragapus o. obscurus 



2. Columba f. fasciata 



3. Aquila chrysaetos 



4. Strix o. huachucae 



5. Cryptoglaux a. acadica 



6. Glaucidium g. pinicola 



7. Dryobates v. leucothorectis 



8. Picoides a. dorsalis 



9. Sphyrapicus thyroideus 



10. Cyanocitta s. diademata 



11. Perisoreus c. capitalis 



12. Nucifraga columbiana 



13. Hesperiphona v. montana 



14. Carpodacus cassini 



SUMMER VISITANT 



8. Vermivora virginiae 



9. Dendroica a. auduboni 



10. Dendroica gracise 



11. Dendroica nigrescens 



12. Wilsonia p. pileolata 



13. Hylocichla g. auduboni 



RESIDENT 



15. Loxia c. Strickland! 



16. Spinus pinus 



17. Pipilo m. montanus 



18. Troglodytes a. parkmani 



19. Certhia f. montana 



20. Sitta canadensis 



21. Sitta p. pygmaea 



22. Penthestes g. gambeli 



23. Regulus c. calendula 



24. Myadestes townsendi 



25. Planesticus m. propinquus 



26. Sialia m. bairdi 



27. Sialia currucoides 



