EATON — BIRDS OF WESTERN NEW YORK. 59 



HYPOTHETICAL LIST. 



Inasmuch as this paper is published chiefly for the use of bird 

 students in western New York, it seems advisable to add a list of 

 those species which may possibly be taken in this region. Many of 

 these birds are more liable to be found here than the accidental species 

 which have actually been captured. For example, the black-throated 

 loon, Barrow's golden-eye, Forster's tern, Cory's least bittern, 

 Richardson's owl, purple grackle, Kirtland's warbler and Hudsonian 

 chickadee might more naturally be expected to occur than such birds 

 as the scaled petrel, tropic bird, cinnamon teal and Bullock's oriole. 



The authorities for all statements relating to the ranges and 

 accidental records of the hypothetical species are the Auk, the A. O. 

 U. Check-list and Chapman's Hand-book. 



9. Gavia arctica (Linn.) Black-throated loon. 



This species has been taken on Lake Erie and also ofi Toronto 

 on Lake Ontario. 



38. Stercorarius longicaudus Vieill. Long-tailed jaeger. 



" Northern hemisphere; south in winter to the Gulf of Mexico," 



62. Xema sabinii (Sab.) Sabine's gull. 



"Arctic regions; south in winter to New York and the Great 

 Lakes. ' ' 

 65. Sterna maxima Bodd. Royal tern. 



* ' Tropical America ; casually northward to Massachusetts and 

 the Great Lakes." 

 69. Sterna forsteri Nutt. Forster's tern. 



This species formerly bred on northern shore of Lake Erie and 

 undoubtedly has occurred in this region, 

 128. Fregata aquila Linn. Man-o'-war bird. 



Tropical regions; casually northward to Nova Scotia, Ohio and 

 Wisconsin, 

 (138.) Nettion crecca (Linn.) European teal. 



"Occasional in eastern North America." 

 152. Clangula islandica (Gmel.) Barrow's golden-eye. 



' ' South in winter to New York. ' ' This species has been taken 

 at Lorain, O. , and Toronto, Can. 

 (168.) Nomonyx dominicus (Linn.) Masked duck. 



Tropical America; accidental in Wisconsin, Lake Champlain and 

 Massachusetts. 



