428 BULLETIN 2 03, UNITED STATES NATIONAL MUSEUM 



search of the Greater Yellow-throat, I was confronted by a Kirtland's Warbler. 

 In both instances the birds appeared from out of the thicket within a yard of my 

 path, remained a few seconds then darted off into the scrub. 



The earliest autumn record for the Bahamas seems to be November 

 13 (1891, Eleuthera) ; and the latest spring record, April 25 (1887, 

 New Providence). 



Twomey (1936) has made the interesting point that the temperature 

 and rainfall conditions in the Bahamas during the period December 

 through April are very similar to those in the Kirtland's range in 

 Michigan during the breeding season. 



DISTRIBUTION 



Breeding range. — Kirtland's warbler breeds in Michigan north to 

 Montmorency County (Clear Lake), east to Alpena County (south- 

 west of Alpena) and Iosco County (west of Oscoda) , south to Ogemaw 

 County (west of Rose City) and Clare County (northwest of Harri- 

 son), and west to Wexford County (north of Manton) and Kalkaska 

 County (northeast of Kalkaska) . 



Winter range. — The winter range is restricted to the Bahamas. 

 The species has been recorded from: Abaco, Little Abaco, Berry, 

 Eleuthera, New Providence, Athol, Andros, Watling, Green Cay, and 

 Caicos Islands. 



Migration. — Early dates of spring arrival are : Florida — ^West Ju- 

 piter, April 27. Georgia — Cumberland Island, April 12. South 

 Carolina — St. Helena Island, April 27. Missouri — St. Louis, May 8. 

 Ohio — Avondale, May 4 ; Columbus, May 8 ; Cleveland, May 13. Illi- 

 nois — Glen Ellyn, May 7. Indiana — Wabash, May 4. Ontario — 

 Toronto, May 16. Minnesota — Minneapolis, May 13. Michigan — 

 Ann Arbor, May 6 ; Oscoda County, May 8. 



Fall dates are : Ontario — Point Pelee, October 2. Ohio — Holland, 

 September 22; Columbus, September 11. Virginia — Fort Myer, 

 September 25. South Carolina — Chester, October 11; Mount Pleas- 

 ant, October 29 ; Charleston County, October 4. 



Egg dates. — Michigan: 40 records. May 28 to June 30 (July 17 in 

 the case of a second nesting after the destruction of the first set of 

 eggs). 



DENDROICA DISCOLOR DISCOLOR (Vieillot) 



NORTHERN PRAIRIE WARBLER 



Plates 53, 54 



HABITS 



The common name of this bird is a decided misnomer, as it is not to 

 be found on the real prairies of the Middle West. Perhaps it was 

 given the name because it has been found on the so-called prairies or 



