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 with black; usually in small flocks. *Magnolia Warbler.

39. SWAMP SPARROW. 5-3/4 in.

(Melospiza georgiana. 584.)

Very darkly colored and heavily streaked; chestnut cap, sometimes indistinctly streaked; _black forehead_; plain ashy breast; shy; frequents bushes along the water's edge. *Song Sparrow. *Lincoln Sparrow.

40. PURPLE FINCH. 6-1/4 in.

(Carpodacus purpureus. 517.)

Not "purple," but faded crimson-red, somewhat streaky; belly whitish; _large, heavy bill_; female mottled olive-brown, resembling sparrows; noteworthy song.

41. CEDAR WAXWING. 7 in.

(Ampelis cedrorum. 619.)

Smooth snuff-brown; _crested_; chin and line from bill to crest, black; end of tail banded with yellow; in flocks; "monotonous lisping note."

42. WILSON THRUSH. 7-1/4 in.

(Hylocichla fuscescens. 756.)

_Uniform tawny brown_; no ring about the eye; below white, faintly tinged and lightly spotted; shy, about bushes; sometimes sings in Lincoln Park.

*Other Thrushes.

43. AMERICAN SPARROW HAWK. 10-1/2 in.

(Falco sparverius. 360.)

Reddish-brown, usually barred or spotted with black; head bluish, _marked on sides with black_; tail white-tipped with one broad black bar; below white, more or less spotted; narrow pointed wings; female, much more barred, darker and _streaked_ below. _The smallest hawk._

44. BARN SWALLOW. 7 in.

(Hirundo erythrogastra. 613.)

Blue-back; chestnut shading to white below; _deeply forked tail_. *Tree Swallow.

45. BROWN THRASHER. 11-1/4 in.

(Toxostoma rufum. 705.)

Bright rusty red; white below, much streaked; long bill and _long, sweeping tail_; song, loud, bold and varied; about bushes. *Fox Sparrow.

46. HOUSE WREN. 5 in.

(Troglodytes aedon. 721.)

Brown, barred with darker; below grayish, tinged with brown, also barred; rusty-colored tail, _two inches long_; remarkable song. *Other Wrens.

47. BLUE-GRAY GNATCATCHER. 5 in.

(Polioptila caerulea. 751.)

Blue-gray; white beneath; _long tail_ edged with white; male has a black line over eye; fidgety, never long in a place; wheezy song.

*Black-throated Blue Warbler. *Cerulean Warbler.

48. WHITE-CROWNED SPARROW. 7 in.

(Zonotrichia leucophrys. 554.)

Ashy-gray; rump, tail and wings, brown, streaked with black; _crown conspicuously striped_ with black and white; no yellow; two white wing-bars; in flocks, often with _White-throated Sparrows_; scratches with both feet; notice the song. *White-throated Sparrow.

49. PALM WARBLER. 5 in.

(Dendroica palmarum. 672.)

Streaky olive-gray; _chestnut cap_; yellow line over eye; beneath yellowish (brightest on throat and under tail) streaked with brown; feeds on ground in flocks; constantly _tilts its tail_ up and down.

*Water-Thrushes.