Prairie warbler

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We monitored 997 active nests of eight species with sufficient sample sizes to fit nest survival models including 73 Acadian flycatcher (Empidonax virescens, [n.sub.eff] = 1276), 172 bluegray gnatcatcher (Polioptila caerulea, [n.sub.eff] = 1980), 256 Eastern wood-pewee (Contofms virens, [n.sub.eff] = 5344), 72 field sparrow (Spizella pusilla, [n.sub.eff] = 608), 207 indigo bunting (Passerina cyanea, [n.sub.eff] = 2206), 47 prairie warbler (Setophaga discolor, [n.sub.eff] = 504), 66 summer tanager (Piranga rubra, [n.sub.eff] = 893), and 102 yellow-breasted chat (Icteria virens, [n.sub.eff] = 1021) nests.
On 17 May, we observed a male chestnut-sided warbler defend its territory from a male prairie warbler (Setophaga discolor), and on 2 June during a point count we observed agonistic behavior between an unbanded male chestnut-sided warbler and a banded chestnut-sided warbler (sex unknown).
Hobart led, he and his students identified crows, a gray-crested flycatcher, blue jays, a Northern flicker, a magnolia warbler, a prairie warbler and many more.
Bird species that will be positively impacted by this project include: the prairie warbler, field sparrow and eastern meadowlark, among others.
Reportedly, the distribution of birds killed averaged less than 85 individuals of any one species at a single tower, even when the number of fatalities numbered in the thousands, with the exception of the Tennessee warbler (Vermivora peregrina), Blackpoll warbler (Dendroica striata) and Prairie warbler (Dendroica discolor).
Some songbirds that show rapid declines in BBS data, such as the prairie warbler and wood thrush, also suffer high rates of cowbird parasitization.
The ecology and behavior of the Prairie Warbler Dendroica discolor.
Additional Cook treasures included black-belling whistling duck, cinnamon teal, cattle egret, snowy owl, Townsend's solitaire, western tanager, prairie warbler and Harris's sparrow.
Among those to benefit are "early-successional" birds such as the prairie warbler - characterized by dense shrub cover and minimal tree cover.