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 a. cineraceus, Dryobates arizonae, 

 Melanerpes f. aculeatus, 7'yraunus I'ocifcrans, Myiarchus I. olivasccns, Aphelo- 

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

 griseus, Baeolophus wollweberi, Polioptila c. obscura. 



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

 / 'ireosylva g. swainsoni are to a great extent denizens of the sycamores along 

 the canon streams in the foothills. Icterus parisorum and Aimophila ruiiceps 

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

 is in the denser brush of the same region. 



Species in the Transition Zone and Higher, moke nearly Related to the 

 Rocky Mountain Fauna to the Northward 



SUMMER VISITANT 



Vermivora virginiae 

 Dendroica a. auduboni 

 Dendroica gracise 

 Dendroica nigrescens 

 Wilsonia p. pileolata 

 Hylocichla g. auduboni 



Loxia c. stricklandi 

 Spinus pinus 

 Pipilo m. montanus 

 Troglodytes a. parkmani 

 Certhia f. montana 

 Sitta canadensis 

 Sitta p. pygmaea 

 Penthestes g. gambeli 

 Regulus c. calendula 

 Myadestes townsendi 

 Planesticus m. propinquus 

 Sialia m. bairdi 

 Sialia currucoides 



