reen; _shining white below_; tail appears nearly square at
end in flight; often seen skimming near the surface of still water. *Barn
Swallow. *Purple Martin.

31. CARDINAL. 8-1/2 in.
(Cardinalis cardinalis. 593.)

Bright red, including large blunt bill; _crested_; black markings on face
and throat; female olive-gray, tinged lightly with red and obscurely
marked; fine songster. *Tanagers.

32. WHITE-THROATED SPARROW. 7 in.
(Zonotrichia albicollis. 558.)

_White throat_; unmarked ashy breast; whitish on belly; crown striped
with black and white; broad white stripe over the eye shading to yellow
in front; in flocks about shrubbery; clear, sweet whistle,
"pee-bod-dee-dee-dee." *White-crowned Sparrow.

33. MARSH HAWK. 22 in.
(Circus hudsonius. 331.)

Bluish gray, showing light streaks; gray below, belly white marked with
brown; tail barred; _white rump patch_; female brown, barred and streaked
more heavily; note shrill.

34. CHIPPING SPARROW. 5-3/4 in.
(Spizella socialis. 560.)

Streaked; _plain ashy breast_; two faint white wing-bars; _chestnut-brown
cap_; whitish line over eye; song, a strong clear trill. *Field Sparrow.
*Tree Sparrow.

35. MOURNING DOVE. 12 in.
(Zenaidura macroura. 316.)

Gray-blue, tinged with brownish; tail broadly tipped with white,
_tapering to a narrow point_; sides of neck iridescent; marked with black
on wings and sides of head; rapid whistling flight; note, "coo-oo."
*Pigeon. *Cuckoos.

36. WINTER WREN. 4-1/4 in.
(Olbiorchiles hiemalis. 722.)

Dark tawny-brown, barred on wings and tail; lighter below, barred
posteriorly; pale line over eye; _stub tail, carried erect_; very fine
song. *Other Wrens.

37. VESPER SPARROW. 6-1/4 in.
(Poaecetes gramineus. 540.)

Streaked above and below; underparts whitish, tinged with buff across
breast and on sides; shows _two conspicuous white tail feathers in
flight_; noteworthy song. *Female Purple Finch.

38. MYRTLE WARBLER. 5-1/2 in.
(Dendroica coronata. 655.)

Blue-gray, streaked; crown, _rump_ and spot on each side of breast,
_yellow_; white below, marked on breast and sides