In summer, grassland birds such as the Eastern meadowlark
and bobolink frequent the area near the grass trail, she added, and in fall, Fort Sheridan Hawk Watch volunteers count large numbers of raptors migrating along the lake.
nests contained an average of 4.1 host eggs per nest (range 1-6; SE = 0.17); Grasshopper Sparrow nests contained an average of 3.8 host eggs per nest (range 1-5; SE = 0.24); and Dickcissel nests contained an average of 3.9 host eggs per nest (range 2-5; se = 0.21).
of detections All birds 210 American goldfinch Carduelis tristis 6 American robin Turdus migratorius 1 American tree sparrow Spizella arborea 30 Bewick's wren Thryomanes bewickii 2 Dark-eyed junco Junco hyemalis 1 Eastern meadowlark
Sturnella magna 5 European starling Sturnus vulgaris 1 Field sparrow Spizella pusilla 6 Harris's sparrow Zonotrichia querula 4 Horned lark Eremophila alpestris 11 Lapland longspur Calcarius lapponicus 1 Loggerhead shrike Lanius ludovicianus 5 McCown's longspur Calcarius mccownii 1 Northern cardinal Cardinalis cardinalis 2 Rufous-crowned sparrow Aimophila ruficeps 5 Red-winged blackbird Agelaius phoeniceus 9 Song sparrow Melospiza melodia 6 Spotted towhee Pipilo maculatus 1 Unknown spp.
In Gettysburg, the fires restore open grasslands, an important but quickly disappearing habitat for species such as sparrows and the Eastern meadowlark
. The main reason the Park Service torches the landscape at Gettysburg and other historic sites, however, is to maintain historical accuracy.
Savannah sparrows have also been found there, along with migrating bobolink, Eastern meadowlark
and American kestrel.
The most commonly encountered species, in descending order of relative abundance (individuals detected per point count) were brown-headed cowbird, dickcissel, grasshopper sparrow, and eastern meadowlark
. Many grassland bird species that have been identified as being of conservation concern were detected, with a tendency for these species to be detected at study sites within the Southeast Prairies BUL.
These birds have earned the unfortunate distinction of a spot on Audubon's list: American Bittern, Black-throated Sparrow, Boreal Chickadee, Common Grackle, Common Tern, Eastern Meadowlark
, Evening Grosbeak, Field Sparrow, Grasshopper Sparrow, Greater Scaup, Horned Lark, Lark Sparrow, Little Blue Heron, Loggerhead Shrike, Northern Bobwhite, Northern Pintail, Ruffed Grouse, Rufous Hummingbird, Snow Bunting and Whip-poor-will.
Seven confirmed or probable breeders [Northern Bobwhite (Colinus virginianus), Whip-poor-will, Redheaded Woodpecker (Melanerpes erythrocephalus), Field Sparrow, Grasshopper Sparrow, Dickcissel, and Eastern Meadowlark
(Sturnella magna)] are of conservation concern at national and physiographic levels (Fitzgerald et al.
According to John Fitzpatrick, director of the Cornell Laboratory of Ornithology, many North American birds are in serious decline--including almost all grassland species (such as the bobolink and eastern meadowlark
) and about half of all forest species (such as the wood thrush and red-headed woodpecker).
Abundant nesters at the site included Mourning Dove, Northern Mockingbird, Northern Cardinal, Dickcissel, Red-winged Blackbird, and Eastern Meadowlark
The five most frequent species were the song sparrow, red-winged black-bird, field sparrow, eastern meadowlark
, and ring-necked pheasant, whereas, the red-winged blackbird, song sparrow, Henslow's sparrow, bobolink, and eastern meadowlark
were the most abundant (Table 2).