Other commonly detected species included the white-crowned sparrow (n = 51) and the American tree sparrow (n = 30; Table 1).
The plateau effect was the best supported model for the American tree sparrow (Fig.
American tree sparrow
. In: Poole, A., and Gill, F., eds.
Ring-necked pheasants, American tree sparrows, northern bobwhites, dark-eyed juncos and American goldfinches were the species most abundant and/or widely distributed on CRP fields.
American tree sparrows were abundant and widespread in both CRP and row-crop fields in our study.
When the endless winter night falls on the arctic tundra, millions of American tree sparrows
, snow buntings and Lapland long-spurs depart for weedy, wind-swept fields across the northern tier of the lower 48 states.
Also, 59 horned larks; a record 1,366 black-capped chickadees; 25 brown creepers; 31 Carolina wrens, a new high; 48 golden-crowned kinglets; one ruby-crowned kinglet; 31 eastern bluebirds; two hermit thrushes; 2,255 American robins; one gray catbird; 23 northern mockingbirds; 2,760 European starlings; 175 cedar waxwings; two eastern towhees; 86 American tree sparrows
; one chipping sparrow; one field sparrow; one savanna sparrow; 58 song sparrows; five swamp sparrows; 214 white-throated sparrows; 2,093 dark-eyed juncos; 13 snow buntings; 215 northern cardinals, a new record; 147 red-winged blackbirds, another record; one common grackle; 24 brown-headed cowbirds; 84 house finches; 449 American goldfinches; and 753 house sparrows.
Among the larger numbers recorded this year - along with the evening grosbeaks, pine grosbeaks and common redpolls - were 731 house sparrows, 689 rock (Dove) pigeons, 533 dark-eyed juncos, 508 cedar waxwings, 478 starlings, 462 American tree sparrows
, 396 American crows, 383 tufted titmouse, 326 American goldfinches, 275 mourning doves, 252 snow buntings, 230 wild turkeys, 217 black-capped chickadees, 204 white-breasted nuthatches, 126 northern cardinals, 131 downy woodpeckers, 111 common ravens and 101 blue jays.