270 AVES : MACROCHIRES, — XLV. 
449. CHORDEILES Swainson. (xopd7, 2 musical instrument ; 
dein, evening.) 
856. C. virginianus (Gmelin). Niegut Hawx. Buti Bar. 
Blackish, barred and mottled with grayish and buffy; a large wing 
spot, bar across tail, and V-shaped blotch on throat — white in @, 
tawny or obscure in 9; the wing spot placed in front of tip of 7th 
quill.” L. 9}. W.8. 1.5. N.Am.,, very abundant, flying high 
in evening or cloudy weather. 
Famitry CLXI. MICROPODIDAS. (Tue Swirts.) 
Bill fissirostral, as in the Goatsuckers and Swallows. Wings 
very long, thin and pointed; secondaries very short. Feet small, 
weak; hind toe often elevated or otherwise turned; toes com- 
pletely cleft; middle claw not pectinate; no rictal bristles; tail 
feathers 10; plumage compact. In most species the salivary 
glands are highly developed, and their secretion is used as a glue 
in the construction of the nest; species of Collocalia in China thus 
form the edible bird’s nest. Small birds of the warmer parts of 
the world, bearing a superficial resemblance to Swallows, but struc- 
turally very different, being closely related to the Humming Birds, 
nearer to them even than to the Goatsuckers. Genera 6 or 8; 
species 50. (xpos, small; zrovs, foot.) 
a. Tarsus bare, longer than middle toe; tail rounded, its feathers with the 
shafts spinous, projecting beyond the plumage. . . CH#rTuRA, 450. 
450. CHAITURA Stephens. (yairn, bristle ; odpd, tail.) 
857. C. pelagica (L.). Caimney Swirt. Cuimney Swat- 
Low. Sooty brown; throat paler. L. 54. W.5. T. 2. E.N. Am. 
abundant ; now nesting in chimneys, as formerly in hollow-trees. 
Famity CLXII. TROCHILIDA#. (Tue Hummine Birps.) 
Bill subulate, usually longer than the head, straight or curved; 
tongue capable of great protrusion. Wings long and pointed, the 
secondaries short, only 6 in number; tail of 10 feathers. Feet 
very small, with long sharp claws. Smallest of all birds and among 
the most brilliantly colored. Genera 75; species 300 or more, one 
of the largest families in Ornithology. All are American, and most 
of them tropical, but our common species ranges far into Canada. 
Chiefly insectivorous; not musical. 
a. First primary not attenuate, bowed or curved inwards; bill straight; frontal 
feathers covering nasal scale. . . « © » « « « TRocHILUS, 451. 
451. TROCHILUS Linnzus. (rpoyidos, plover.) 
858. T. colubris L. Rusy-ruroatep Hummine Birp. ¢ 
metallic green above; a ruby-red gorget ; tail deeply forked, 
