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Birds and Seasons 135 BIRDS OF THE SEASON For permanent residents see Bird-Lore Dec, 1900, p. 184. Migrants Arrii'ing from the North. — August: August 1-15, Sora, Yellow-bellied Flycatcher, Golden-winged Warbler, Canadian Warbler, Water Thrush; r5-3i, Olive- sided Flycatcher, Tennessee Warbler, Nashville Warbler, Parula Warbler, Cape May Warbler, Black-throated Green Warbler, Black-throated Blue Warbler, Magnolia, Warbler, Blackburnian Warbler, Wilson's Warbler, Red-breasted Nuthatch. September : September i-io, Lincoln's Sparrow, Blackpoll Warbler, Connecticut Warbler; 10-20, Blue-headed Vireo, Olive-backed Thrush, Bicknell's Thrush; 20-30, Herring Gull, Junco, White-throated Sparrow, 'hite-crowned Sparrow, Myrtle Warbler, Yellow Palm Warbler, Brown Creeper, Golden-crowned Kinglet, Ruby-crowned Kinglet, Winter Wren, Gray-cheeked Thrush. Summer Residents Leaving for the South. — September : September i-io, Acadian Flycatcher, Orchard Oriole, Rough-winged Swallow, Worm-eating Warbler, Blue-winged Warbler; 10-20, Baltimore Oriole, Yellow Warbler, Yellow-breasted Chat; 20-30, Green Heron, Hummingbird, Kingbird, Crested Flycatcher, Wood Pewee, Rose-breasted Gros- beak, Yellow-throated Vireo, Warbling Vireo, Hooded Warbler, Louisiana Water Thrush, Wilson's Thrush. AUGUST AND SEPTEMBER BIRD-LIFE NEAR PHILADELPHIA ISv WiTMKR Stone Auf^ust and September are the great months of southward migration, corresponding to April and May of the spring movement. It is true that none of our summer resident species leave us entirely until the first week in September, but migrants are passing during the greater part of both months. The berry -bearing trees and bushes are great rendezvous for birds at this season, and many species can be seen and studied if the observer takes his stand in the vicinity of a group of wiKl-clierries or clump of pokeberries. The molt of many birds may be noted at this time, and we can easily distinguish the 'fork-tailed ' Robins, which are just beginning to lose their feathers, and the 'wedge-tails' in which the new plumage is nearly grown. Much that goes on during these months is missed by the observer because of the heat and other ilrawbacks of midsummer, which rentier field work a serious matter. Then, too, the birds are silent, retiring and listless, in marked contrast to their activity during the spring migration or the first crisp (las of ()ct()bc-r. liy Septeinber i, nearl- all birds, old ami voung, have assumed their winter plumage, and the tlull blended colors ami lack of man character- istic markings of the nuptial season render identifu ation more difficidt. Our first winter visitants, the VVhite-throatetl Sparrows, reach us by September 20, and sometimes the Junco is to be seen before October I. HIRl^S or THE SEASO.V Fur pi-niiaiKiit residents sec I'ird-LoRi;, Dec., 1900, ji. 185. Transients .hrixim^ friim orth. — .August 1-15, (iolilcn- winged arlilcr, Chestnut-