BIRDS OF PENNSYLVANIA. 



201 



GENUS PERISOREUS BONAPARTE. 

 Perisoreus canadensis (LINN.). 



Canada Jay. 



DESCRIPTION. 



"Gray, whitening on head, neck and breast; a dark cap on hind head and nape, 

 separated by a gray cervical collar from the ashy-plumbeous back ; wings and tail 

 plumbeous, the leathers obscurely tipped with whitish. Bill and feet black ; young 

 much darker, sooty or smoky brown. * * * Length 10 inches ; extent about 16 ; 

 wing 5.25 to 5.75 ; tail rather more graduated ; tarsus 1.33; bill under 1, shaped like a 

 titmouse's." Coues. 



Habitat. Northern New England and New York, Michigan and Canada, north- 

 ward to Arctic America. 



The Canada Jay a very rare and irregnlar straggler in winter from 

 the north I have never met with in this state. Dr. A. C. Treichler, of 

 Elizdbethtown, has one in his collection which was captured in Lancas- 

 ter county, February, 1889. This is the only specimen, so far as I can 

 learn, that has been taken in Pennsylvania during- the last twenty-five 

 years. 



SUBFAMILY CORVINE. CEOWS. 



GENUS CORVUS LINN^US. 

 Corvus corax *principalis RIDGW. 



Northern Raven. 



DESCRIPTION. 



Size large ; entire plumage glossy black with purplish reflections ; feathers of 

 throat lengthened, disconnected and pointed ; bill large and like feet black ; length 

 about 2 feet ; extent 4 feet or more. 



Not having any specimens of Pennsylvania Ravens in my possession. I am unable to state positively 

 whether the bird found here Is the form known as slnuatus, which occurs as a common resident in the 

 regions west of the Mississippi, or the new sub-species principal^. In the present state of uncertainty J 

 deem It best to consider our bird as the northern form, 



