576 MICIIKIAN lURI) LIFE. 



wliicli is ;i l)n)ii(l streak of l)right yellow ruiiiiing from nostril over the (!ye, and, as a narrow 

 line around it ; checks washed with (ili\e-ureeii; tliroat, chest and sides of neck grayish white 

 or pale oray; >i<lcs of l.rcast and l.cily, and tlaiiks hriglit sulpiiur yellow; middle of belly 

 pure white; wings and tail dusky, the exposed edges glossed with olixe-green, the wing witli 

 two eonsjiieuous whitish or yellowish bars, and tertiaries broadly edged with the same; 

 bill blackish above, horn-blue below; iris bluish-white. Young: Similar to adult, but 

 duller; stripe from nostril over eye white anteriorly, yellowish only over the eye; sides and 

 flanks pale buffy yellow; wing markings broader and yellower. 



Length 4.50 to 5 inches; wing 2.35 to 2.50; tail L90 to 2.10; cuhnen about .40. 



P^amily 63. MNlOTlLTlDJv Wood Wuihlers. 



Nearly forty species of Wood Warl)lers have been found in xMichigan 

 and more than thirty of them occur regularly and in some numbers. In 

 spite of the family name most of the members are not conspicuous as 

 singers, their voices being thin and weak or shrill and insect-like. Notable 

 exceptions are the Ovenbird and Waterthrushes, while a dozen other 

 species have sweet and musical songs, though commonly short and simple. 



In this family the sexes as a rule are noticeably different in plumage, 

 and young birds frequently are quite unlike their parents. Add to this 

 the seasonal variations and it becomes apparent that the identification 

 of species is often a difficult matter. The following purely artificial key 

 should prove satisfactory for all adult male specimens in spring, and for 

 a smaller number of females at the same season. It is practically im- 

 possible to construct an artificial key for beginners which will answer for 

 immature birds. When one knows the adults fairly well he will begin 

 to see resemblances in the young. 



As with other families this key is intended for use so/e/y ■with specimens 

 in hand. Except under extraordinaiy conditions it would be entirely 

 useless for living birds. 



KEY TO SPECIES. 



A. Tail with white or colored patches. B, BB. 

 B. Tail patches white. C, CC. 



C. Light patches or bars on the wings. I), DD. 

 D. Wing bars yellow. E, EE. 



E. Throat black or slate colored, sides gray. Golden- 



winged Warbler, male and female. No. 265. 

 EE. Throat pure white, sides with more or less rich 

 brown. Chestnut-sided Warbler, male and female. 

 No. 276. 

 DD. Wing-bars white. F, FF. 



F. Birds without any yellow. CI, (l(i. 



G. Streaked with black and white onlv. II, HH. 

 H. Top of head clear black. B!ackpoll Warliler. 



No. 278. 

 HH. Top of head black with a median white 

 stripe. Black and White Warbler. No. 

 261. 



