ANNOTATED LIST OF THE BIRDS OF THE 

 NEW YORK CITY REGION 



HOLBOELL'S GREBE (Colymbus holboelli) 



A rather common migrant along the coast, scarcer in 

 winter , most numerous at the eastern end of Long Island. 

 Of rare or casual occurrence inland. Subject to considerable 

 variation in numbers from year to year. Well-marked flights 

 are occasionally noted in late winter or spring near New 

 York City. Seldom seen before November 1 or after April 15. 



Holboell's Grebe is readily recognizable from our other 

 Grebes by its much larger size. In winter plumage it lacks the 

 sharp contrast of black and white on the side of the head 

 characteristic of the Horned Grebe, but in breeding dress this 

 character is reversed in the two species. In flight at a distance 

 observers are apt to confuse Holboell's Grebe with the female 

 Red-breasted Merganser. The Grebe, however, moves its 

 wings less rapidly, has an even more attenuated neck, and 

 holds the head and neck bent downward slightly, an excellent 

 field mark by which the two birds can be distinguished at the 

 distance of at least a quarter mile. 



Long Island. Irregular winter visitant, commonest during 

 spring and fall. October 19, 1904 (Rockaway Point, W. H. Wieg- 

 mann) and October 7, 1918 (Peconic, Latham) to May 13, 1917 

 (Long Beach, Janvrin). Casual in Prospect Park, Brooklyn, 

 March 16, 1918 (Fleischer). 



ORIENT. Winter visitant, October 7, 1918 to May 6, 

 1917. Average, November 20 to March 23. 

 MASTIC. Uncommon winter visitant. 

 LONG BEACH. Common transient, rare in winter, some- 

 times abundant in late February, late March, or early April. 

 October 23, 1910 (Griscom) to May 13, 1917 (Janvrin). 

 New York State. Rare off Staten Island (Chapin); rare 

 near Ossining on the Hudson, about 15 records in 15 years (Courte- 

 nay Brandreth); very rare elsewhere. 



CENTRAL PARK. Casual on the Reservoir, April 6 to 11, 

 1916 (Hix and L. N. Nichols). 



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