65 



4. Under parts whitish, without yellow; upper parts black; tail 



white tipped Kingbird. 



4. Under parts yellow except ashy throat and breast ; above ashy; 



tail not white tipped - (5) 



5. Tail slightly forked, its outer feather with entire outer web and half 

 of the quill whitish ; head, neck, and breast light ashy, that on 

 breast lighter than that on back, the chin and throat pale ashy; 

 wings blackish narrowly edged with paler, the tip of outer pri- 

 maries narrowed gradually for some distance. . . . Arkansas Kingbird. 

 5. Tail rounded, its outer feather with quill brown and only outer edge 

 of outer web whitish; head, neck, and breast dark ashy, breast 

 as dark as back, chin abruptly whitish ; wings brownish, broadly 

 edged with paler, the tips of outer primaries narrowed abruptly 



near the end Cassin Kingbird. 



6. Under parts with throat and breast ashy changing to sulphur 

 yellow on belly and under tail-coverts; wings and tail con- 

 spicuously marked with chestnut (7) 



6. Under parts not as above, without decided yellow; no chestnut 



on wings or tail (8) 



7. Throat and chest dark ashy, abruptly changing to bright yellow; 

 above olivaceous brown ; edgings on secondaries and coverts gray- 

 ish, the chestnut on inner web of tail feathers extensive, the fus- 

 cous stripe very narrow and not widening at tip 



Great-crested Flycatcher. 



7. Throat and chest very pale ashy, former almost white, changing 

 gradually to pale yellow; above grayish brown; edgings on sec- 

 ondaries and coverts yellowish, the chestnut on inner web of tail 

 feathers narrower, the fuscous stripe wider and broadening at tip 



across the feather Ash-throated Flycatcher. 



8. Bill narrow and entirely black; wing 5 times as long as tarsus. . (9) 

 8. Bill broad, lower mandible more or less pale; wing 6 times as 



long as tarsus (10) 



9. Belly whitish ; elsewhere olive-gray, the tail dusky Phoebe. 



9. Belly cinnamon brown; elsewhere brownish gray, the tail black. . . . 



. .Say Phoebe. 



10. Wing 3| to 4 i 3 D , averaging 4 inches; above dark oliva- 

 ceous, throat whitish, breast and sides dull grayish, middle 

 of belly abruptly yellowish white in a lengthwise streak .... 



Olive-sided Flycatcher. 



10. Wing 3J to 3£ inches; belly without a defined yellowish 



white streak (11) 



11. Upper parts lighter, more olivaceous, belly more whitish, breast less 



olive gray; lower mandible yellowish Wood Pewee. 



11. Upper parts darker, more fuscous; belly more clouded, breast much 

 more olive gray, generally solidly of "iat color; lower mandible 



brownish Western Wood Pewee. 



12. Under parts sulphur yellow, that u throat, breast, and sides 



