98 A FIELD GUIDE IN NATURE-STUDY 



A-6. The flycatchers: Birds with bill hooked at the tip, with 

 bristles at the base of the bill; best known by their 

 habits. The flycatcher sits on some vantage point to 

 watch for insects; spying one it flies out to get it and 

 then flies back to the same or nearby perch to await the 

 next. Mostly small birds, smaller than robin and 

 many smaller than a sparrow 

 E Belly bright sulphur yellow 



I Crested; 9 in. Crested Flycatcher 



II No crest; 5^ in. Yellow-bellied Flycatcher 



EE Belly not bright yellow, may be washed with pale 

 yellow 



I Tail black, conspicuously tipped with white Kingbird 



II Tail without white 



O Upper parts very dark, wings much longer 

 than tail 

 X A tuft of fluffy yellow- white feathers on 



each flank Olive-sided Flycatcher 



XX No tuft of feathers on flank Wood Pewee 



OO Upper parts not very dark; wings scarcely 

 longer than tail 

 X Bill all black; wing bars indistinct; tail 



twitches; pure white on under parts Phoebe 



XX Bill not all black; wing bars distinct; 

 under parts yellowish 

 Y Lower mandible yellow; says 



"chebec" constantly Least Flycatcher 



YY Lower mandible white or flesh color 

 a Upper parts brown 



o Wing bars yellow- white Triall's Flycatcher 



oo Wing bars brown-ashy Alder Flycatcher 



aa Upper parts olive green; wing 



bars very conspicuous Acadian Flycatcher 



A-;. Birds with blue conspicuous in their coloring (in some 

 the color is gray-blue) 

 E With crest, as large as robin, conspicuously blue, 



black, and white Blue Jay 



EE Without crest 



I Almost entire bird blue 



Indigo blue, wings and tail dark Indigo Bunting, male 



OO Blue-black, shoulders chestnut Blue Grosbeak, male 



II Only parts of bird blue 

 O Back blue 

 X Breast red 



Y Broad white line over eye Red-breasted Nuthatch 



