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References in periodicals archive ?
For example, the Baird's Sparrow, historically ranging from Oregon to the Dakotas and into southern Alberta and Saskatchewan, will lose an extraordinary 91 percent of its habitat by 2075 due to a warming climate and land-use changes.
And as the Baird's sparrow moves deeper into Canada's prairie provinces, there will, in turn, be "unforeseen impacts on those natural communities.
Of the five open-grassland specialists in our study, only Baird's sparrow showed a negative association with shrub density; this is consistent with what has been reported for this species during the breeding season (Green et al.
However, Baird's sparrow, also a solitary forager, showed the opposite (negative) association with vertical grass density than that suggested and indicated by literature on responses to grass cover and height of grass in the nonbreeding season (Desmond et al.
Sprague's pipit, grasshopper sparrow, and Baird's sparrow are of international or regional concern for conservation (United States Fish and Wildlife Service, 2008; Berlanga et al.
Effects of management practices on grassland birds: Baird's sparrow.
Site Year Audubon Babocomari Buenos Aires Davis Savannah sparrow 1999 2 2 12 0 2000 20 17 11 0 2001 0 34 48 60 Grasshopper sparrow 1999 52 27 79 19 2000 74 7 43 8 2001 3 0 12 17 Baird's sparrow 1999 14 8 6 7 2000 5 6 1 13 2001 10 4 10 14 Site Year Diamond C San Rafael Total Savannah sparrow 1999 0 6 22 2000 19 4 71 2001 33 1 176 Grasshopper sparrow 1999 25 87 289 2000 58 36 226 2001 10 1 43 Baird's sparrow 1999 0 26 61 2000 3 14 42 2001 3 8 49 Table 3-- Number of birds recorded at seven sites in southeastern Arizona, calculated as the sum of the maximum number of individuals recorded on six transect plots at each site sampled three times each winter, 1999-2001.
We employed a flush mist-netting protocol (Gordon, 2000a) to sample savannah sparrows (Passerculus sandwichensis), grasshopper sparrows (Ammodramus savannarum), and Baird's sparrows (A.
Ferruginous hawk Northern harrier Greater prairie chicken (NA) Sharp-tailed grouse Ring-necked pheasant Mountain plover (NA) Long-billed curlew Upland sandpiper Barn owl (NA) Burrowing owl Short-eared owl Horned lark Sedge wren Sprague's pipit Bobolink (above) Eastern meadowlark (left) Western meadowlark Dickcissel Lark bunting Savannah sparrow Grasshopper sparrow Baird's sparrow LeConte's sparrow Henslow's sparrow Cassin's sparrow Vesper sparrow McGown's longspur Chestnut-collared longspur *Key: Declining Increasing Stable Insufficient data (NA)
For example, Baird's Sparrows require vegetation that is moderate to tall in stature, sparse to moderately dense, with moderate forb cover, sparse to moderate litter, and low amounts of woody vegetation.
Baird's Sparrows (Ammodramus bairdii), Grasshopper Sparrows (Ammodramus savannarum), Le Conte's Sparrows (Ammodramus leconteii), Sprague's Pipits (Anthus spragueii), Western Meadowlarks (Sturnella neglecta), and Bobolinks (Dolichonyx oryzivorus) were absent from unburned areas.
Occurrence of Baird's Sparrows was positively associated with frequency of native grasses.