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Group III. Small Birds. 



1. Wings very long, 70 to 100 per cent, of total length ; bill 



and feet small and weak ; usually seen flying but some- 

 times on the ground or perched on wires. 

 A. Uniform sooty-brown, or brownish-gray ; no white. 



Wings as long as body, which ordinarily appears 



tapered towards each end ; flight very rapid ; never 



perch, Chimney Swift. 



Wings only 80 per cent of body :^ flight not notably 



swift ; very rare indeed, Rough-wingei; Swallow. 



13. Not uniform sooty-brown. 



a. Under parts white. 



Large ; tail slightly forked ; back iridescent green 

 or blue'. White-bellied Swallow. 



Small ; tail not forked ; back mouse-brown, 



Bank Swallow. 

 aa. Under parts more or less rufous. 



Tail deeply forked ; rump like back, 



Barn Swallow. 

 Tail not forked ; rump rufous in contrast to back, 



Eave Swallow. 



2. Wings less than 70 per cent, of total length. 



A. Underparts uniform white, whitish creamy or ashy, 

 without streaks, spots or wavy transverse lines and 

 with no decided yellow or black on chin, throat or 

 breast, 

 a. Back streaked with various dark and light shades, 

 b. Crown streaked like back ; active tree climber, 



Brown Creeper. 



bb. Crown chestnut, not like back ; not tree climbers. 



Wings almost uniform bright bay ; shy swamp 



bird, hard to find. Swamp Sparrow. 



