41 



■ ff. Spotted beneath. 



Tinged with buff l)eneath ; legs pale, 



Louisiana Water Thrush. 

 Tinged with sulphur-yellow beneath ; legs 

 dark, Water Thrush. 



dd. Length over 6 inches ; hind claw almost straight, 

 nearly twice as long as middle claw. Titlark. 

 ddd. Length usually under 5^ inches ; if over that, 

 outer tail feathers conspicuously marked with 

 white . 

 e. Tail feathers without white blotches. 

 f. Throat ^^ellow. 

 g. Tail nearly equal to wing, 



Maryland Yellov^t-throat. 

 gg. Tail much shorter than wing. 



Whole head yellow, Yellow Warbler. 

 Whole head not yellow, 



Nashville Warbler. 

 ff. Throat not yellow. 



A white ring around eye, 



Connecticut Warbler. 

 No white eye-ring. Mourning Warbler. 

 ee. Tail feathers with white blotches, 

 f. Tarsus shorter than middle toe and claw, 



Black and White Warbler. 

 ff. Tarsus not shorter than middle toe and claw, 

 g. Rictal bristles nearly wanting 



Entire fore-parts golden yellow, 



Prothonotary Warrler. 

 Fore-parts not wholly yellow. 



Golden-winged Warbler. 

 Rictal bristles evident, 

 h. Back blue, with a central yellowish patch, 



Parula Warbler. 



»D* 



