WARBLERS 95 



possibly S. R., May i-Sept. 15. SE. Minn., uncommon S. R., 

 Apl. 30-Sept. 1. 



In second growths, among birches, and at the border 

 of the woods one may hear the wheezy, lazy, swee-ckee 

 of the Blue-wing. I make it a rule to see the singer 

 always with the hope that he may prove to be the rare 

 Brewster's Warbler, which usually sings like the Blue- 

 wing, but in color is nearer the Golden-wing, being, in 

 fact, like the Golden-wing but with the underparts and 

 cheeks white unmarked with black. It appears to be a 

 hybrid between the Blue-wing and Golden-wing. (Case 



7, Fig- 38.) 



A much rarer supposed hybrid between these two 

 Warblers is known as Lawrence's Warbler. It is yellow 

 below, like the Blue-wing, but has the black throat and 

 cheeks of the Golden-wing. Some individuals sing like 

 the Blue-wing, others like the Golden-wing, and this is 

 true also of Brewster's Warbler, (Case 7, Fig. 37.) 



The Blue-wing nests on the ground, laying 4-5 white 

 delicately speckled eggs the latter part of May. 



X GOLDEN-WINGED WARBLER 

 Vermivora chrysoptera. Case 7, Figs. 34, 36 



A gray bird with a yellow patch on the wings and a black 

 or blackish breast. 



Range. Nests from northern New Jersey and southern Iowa 

 north to Massachusetts and central Minnesota and south in the 

 mountains to northern Georgia; winters in the tropics. 



Washington, uncommon, T. V., May 1-30; Aug. 8-21. Ossin- 

 ing, rare S. R, May 8-Aug. 25. Cambridge, rather common 

 S. R., May 12-Aug. 25. N. Ohio, rare T. V.. Glen Ellyn, irregu- 

 lar, not common T. V., May 4-18; Aug. 16-Sept. 24. SE. Minn., 

 common S. R., May s-Sept. 9. 



The Golden-wing's zee-zee-zee-zee resembles the Blue- 

 wing's song in tone but the syllables are all on one note. 

 When nesting, ~the Golden-wing prefers second growths, 

 2nd birches, but when migrating it may be found in the 



