I 912 ] Swarth: Birth and Mammals from Vancouver Island 111 



The following species of birds were found by us on the east 

 coast only, in the vicinity of Parksville and Nanaimo. They are 

 characteristic of the Transition and Upper Sonoran zones, else- 

 where, and find here their northern limit on the Pacific Coast. 



Dryobates p. gairdneri Spizella p. arizonae 



Agelaius ph. caurimis Progne s. hesperia 



C'arpodacus p. californicus Lanivireo s. cassini 



Zonotricliia 1. nuttalli Thryomanes b. calophonus 



Vireo hattoni obscurus also occurs at the southern extremity 

 of the island, but was not encountered by our party. 



A number of other Transition and Sonoran Zone species 

 found on the east coast, extend across the divide of the island 

 and find their northern and western limit in Alberni Valley. 

 Some of the more conspicuous of these are : 



Rallus virginianus Stelgidopteryx serripennis 



Cathartes a. septentrionalis Vireosylva g. swainsoni 



Sturnella neglecta Dendroica a. auduboni 



Euphagus eyanocephalus Troglodytes a. parkmani 



Pipilo m. oregonus Sialia m. oceidentalis 

 Zamelodia melanoeephala 



The species which we found breeding on the west coast only 

 (Canadian Zone) are as follows: 



Sphyrapieus v. ruber Dendroica townsendi 



Empidonax difficilis Nannus h. pacifieus 



Empidonax hammondi Hylocichla g. nanus 



Passerella i. fuliginosa Ixoreus n. naevius 



There were two species encountered in a manner possibly 

 indicative of a distinguishable belt of Hudsonian Zone : 

 Perisoreus o. obscurus Pinicola e. flammula 



One Alpine-Arctic species of bird was met with : 

 Lagopus 1. leucurus 



The long list of birds of general distribution over Vancouver 

 Island during the breeding season includes the following species, 

 of particular abundance : 



Bonasa u. sabini Colaptes e. saturatior 



Dendragapus o. fuliginosus Cypseloides n. borealis 



Columba fasciata Selasphorus rufus 



Ceryle a. caurina Nuttallornis borealis 



Dryobates v. harrisi Empidonax t. trailli 



