Thirteen bird species corresponded positively with snag abundance (Table 2), including the Red-headed Woodpecker and the Lark Sparrow
, two species that have been declining in abundance in Minnesota for several decades (Sauer et al., 2014).
Cassin's sparrow and lark sparrow nests were built in areas with less woody vegetation on burned plots, consistent with fires removing woody debris.
Lark sparrow (Chondestes grammacus) nest-site selection and success in a mixed-grass prairie.
This might explain some of the declines seen in eastern meadowlarks, northern bobwhites and lark sparrows
Nevertheless among the remaining four passerines, we recorded over 45% of nests parasitized in Blue-gray Gnatcatchers, Painted Buntings, and White-eyed Vireos and <5% in the Lark Sparrow (Table 1).
No evidence for observer effects on Lark Sparrow nest survival.
Habitats selected at a significantly higher rate than at least one other habitat included grasslands by five species (western kingbirds, chipping and lark sparrows, and lark and lazuli buntings), willow riparian by four species (Lucy's warblers, lark and lazuli buntings, and lesser goldfinches), mesquite by four species (ash-throated flycatchers, Lucy's warblers, lark sparrows, and lazuli buntings), cottonwood riparian by three species (Lucy's warblers, lazuli buntings, and lesser goldfinches), oak by two species (chipping sparrows and black-headed grosbeaks), and desert scrub by one species (lazuli buntings).
Chipping and lark sparrows, as well as lark and lazuli buntings, all showed significant selection of grasslands and are granivorous species that would benefit from increased production of seeds.
The 2017 Montrose haul featured cattle egret, snowy egret, western grebe, piping plover, laughing gull, American bittern, lark sparrow
, scissor-tailed flycatcher, Bell's vireo, Kentucky warbler, summer tanager and yellow-headed blackbird.
A lark sparrow
(100.0%, n = 1) was found nesting in a CRP field.
Hard by the end of April set sail for the first of May, lark sparrows
Little is known about ectoparasites and arthropods associated with lark sparrows
(Chondestes grammacus) and their nests.