l6 ROCHESTER ACADEMY OF SCIENCE. 



ANNOTATED CHECK LIST. 

 Order PYGOPODES. Diving Birds. 



Family PODICIPIDAE. Grebes. 



2. Colymbus holboellii (Reinh. ) Holboell' s grebe. 

 Transient and winter visitant ; uncommon. Oct. 20 — May 4. 



Has been taken at Murray, Wilson, Buffalo, Springville, Branchport, 

 Penn Yan, Canandaigua, Cayuga Lake and Utica. The last record, 

 Canandaigua Lake, Oct. 20, 1900. 



3. Colymbus auritus Linn. Horned grebe. 



Transient visitant; common, especially in the spring. April i — 

 May 15, Oct. i — Nov. 20. Occasional winter visitant. Found on 

 lakes and ponds. 



6. Podilymbus podiceps. (Linn.) Pied-billed grebe. 

 Summer resident ; uncommon. April 4 — Nov. 18. Common 



transient visitant. Breeds on the weedy margins of secluded ponds 

 and streams. 



Family GAVIIDAE. I_oons. 



7. Gavia imber (Gunn. ) Loon. 



Transient visitant ; common. April i — May 30, Sept. 15 — Dec. 



10. Occasional winter visitant. Found on lakes, ponds and rivers. 

 Often seen migrating by day, singly or in small companies. 



11. Gavia lumme (Gunn.) Red-throated loon. 



Winter visitant ; uncommon. Nov. — May. Has been taken on 

 Niagara River, Lakes Erie, Ontario, Keuka, Owasco, Onondaga and 

 Oneida. Last record, Canandaigua Lake, April 20, 1899. 



Family ALCIDAE. Auks, inurres and puffins. 

 31. Uria lomvia (Linn.) Briinnich's murre. 



Occasional winter visitant from the North Atlantic coast. Form- 

 erly this bird was unknown here, but in recent years has been taken in 

 considerable numbers. Mcllwraith records nearly fifty captured in 

 the Province of Ontario during the fall and winter of 1893. The 

 following Western New York records are worthy of note : Buffalo, 

 several taken during Nov. and Dec, 1894 — James Savage. Boone- 

 ville, Dec. 15, 1894 ; Utica, Dec. 24, 1894 — Auk 12, 177. Johns- 



