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.
The only species I detected that is listed as critical by ODFW was
Yellow-breasted Chat. I observed a male singing at the northern edge of the west swamp on 3 occasions in 2010, which suggests that he was attempting to establish a territory.
Bird species listed as "at risk" or "of special concern" that can be seen here include sharp-shinned hawk, Cooper's hawk, northern goshawk, red-shouldered hawk, red-headed woodpecker, golden-winged warbler, cerulean warbler, vesper sparrow, grasshopper sparrow, American woodcock, willow flycatcher, wood thrush, blue-winged warbler, Canada warbler,
yellow-breasted chat and rusty blackbird.
A
yellow-breasted chat flits from cottonwood to greasewood.
Best bet: The
yellow-breasted chat, the largest warbler in North America, can be found among willows and clumps of brush and trees in the West Eugene Wetlands complex.
From the Hooded Merganser; the White-Faced Ibis; the Whooping Crane; and the Acadian Flycatcher; to the Blue-Winged Warbler; the
Yellow-Breasted Chat; the Snow Bunting; and the Evening Grosbeak, "Fifty Uncommon Birds Of The Upper Midwest" is an engaging and superbly presented compendium that is as much fun to browse through as it is educationally informative.
This group of birds includes the Hermit thrush, the
Yellow-breasted Chat, the Blue-hooded Euphonia Euphonia elegantissima and the Ash-throated Flycatcher (Table 4).
It is home, said Marty Jakle, to "a diverse assemblage of neotropical migratory birds: the yellow-billed cuckoo, Cassin's kingbird, Bell's vireo, summer tanager, yellow warbler,
yellow-breasted chat, and gray hawk.
Densities of three species, Hooded Warbler (Wilsonia citrina),
Yellow-Breasted Chat (Icteria virens) and White-Eyed Vireo (Vireo griseus) were compared using mist net data from the two treatment areas.
The team finds more than a dozen species in the swamp, including a great horned owl, a
yellow-breasted chat, and the only black-billed cuckoo they encounter during the contest, this one recognized by its flight call.
west of the Rockies (in some cases, all the way to the Pacific Coast), you might see orange-crowned warbler, Nashville warbler, olive warbler, Virginia's warbler, Lucy's warbler, yellow warbler, myrtle warbler, Audubon's warbler, Townsend's warbler, hermit warbler, black-throated gray warbler, Grace's warbler, yellow-throat,
yellow-breasted chat, MacGillivray's warbler, Wilson's warbler, and maybe American redstart.
cendea), Kentucky warbler (Oporornis formosus), white-eyed vireo (Vireo griseus) and
yellow-breasted chat (Icteria virens) are also Tier I species within the CHBCR (Fitzgerald et al., 2003).