Wednesday 9 September 2015

[cobirds] Crow Valley (Weld) on 9Sept2015

I got to the campground around 11am and stayed until 2:30pm.  90 degrees and felt hotter.  Probably some things present early had flown on by the time I arrived.  Water in Crow Creek pretty much dried up along the south side, with stagnant stretches and pools recently pounded by cows along the west and northwest corner.  Things were birdy with the following highlights:

Townsend's Warbler (at least 5) - mostly in Siberian Elms presumably taking advantage of adult Elm Leaf Beetles
Plumbeous Vireo (4) - also mostly in elms, the items I could figure out were Rough Stinkbugs.  One had extensive white in the outer tail feathers, making it strongly resemble a White-winged Junco when viewed from behind in flight.

Cassin's Vireo (only 1)
EASTERN PHOEBE (1) - in southwest corner over pool of water left in the creek

EASTERN WOOD-PEWEE (1) - responded to eastern imitation, pale, extensive yellow in lower mandible, bright white throat and wingbars, in the tree crowns along the west side apart from other pewees.  I think Steve M. or somebody reported this bird previously.

Cassin's Kingbird (at least 2) - northwest corner over the cattle pond by the big Russian-olive (flycatching repeatedly over the pond for something honey bee sized but I could never confirm the prey)

Ruby-crowned Kinglet (1) - my FOS at low elevation on the plains
Dark-eyed Junco (1 pink-sided) - my FOS at low elevation
Townsend's Solitaire (3, including one in spotted juvenile plumage) - FOS at low elevation
Western Tanager (2) - in Russian-olives
Green-tailed Towhee (2)
Hammond's Flycatcher (at least 1, maybe 2) - FOS at low elevation
Hermit Thrush (5) - in Russian-olives
Swainson's Thrush (3) - one was eating Russian-olives
Wilson's Warbler (many)
MacGillivray's Warbler (1m, 2f)
Yellow-rumped Warbler (2) - only the third and fourth I've seen on plains this fall so far
no sapsuckers
no eastern warblers
very few empids

Total of 41 species (including the town of Briggsdale)

*Still a fair number of common shorebirds on A &B #1 on Weld CR124 about 2 miles w of CR77 (the main mission today was to get leeches (observed being eaten the other day by yellowlegs) but nobody was home to ask for permission to sample -drat).

*Crom Lake on Weld CR31 w of 90 is full to the brim and only had Canada Geese

Dave Leatherman
Fort Collins

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