No eastern warblers, but, since Friday (5/19), I've encountered some good birds otherwise around Centennial & Greenwood Village in west Arapahoe.
On Friday, I had my first Lazuli Bunting of the year; the bird, a female, was associating with a family of House Finches. Later in the day, I took my dog for a walk around deKoevend. Along the Big Dry Creek behind the Goodson Rec Center were two Warbling Vireos and a Dusky Flycatcher. Western Wood Pewees, as others have mentioned on Friday, were "flycatching" from the ground. I saw one that, I think, was "flycatching" small ants from a crack in the sidewalk.
On Saturday (5/20), there was a juvenile Broad-winged Hawk, my first in Arapahoe Co., at Marjorie Perry Nature Preserve, as well as a couple of Turkey Vultures. An Olive-sided Flycatcher, my first at the preserve, was perched along the High Line Canal near the northwestern entrance. At Willow Spring Open Space, five White-throated Swifts, also my first in the county, flew west, high over me, inexplicably.
Today (5/21), I took an early walk at deKoevend, where a Plumbeous Vireo foraged and a Rose-breasted Grosbeak (my first in CO) sang near the S. University Ave parking lot. There were six or seven Western Tanagers along the west side of the park. On a later walk on the High Line Canal Trail (from just south of E. Orchard Rd north toward E. Belleview), I had my first Swainson's Thrush of the year, another Warbling Vireo, a chattering Bullock's Oriole, a Western Kingbird, and a family of Great Horned Owls (with two enormous young). No Yellow Warblers or Western Wood Pewees along this stretch of the canal, which surprised me.
When I arrived home from the walks, I heard and briefly saw the MacGillivray's Warbler singing in my yard.
- Jared Del Rosso
Centennial, CO