Tuesday 17 September 2013

[cobirds] Lamar area (Prowers and little bit Bent) on 9/17/2013

The Lamar Community College Woods were good early this morning 7:45-11am, at which time the fog burned off, the sun came out, and the birds in large measure disappeared, settling into more normal numbers and patterns.

Essentially all the birds early on were at the north end, and migration was tangible (birds just dropping in out of the sky to begin feeding and flitting their way southward thru the trees and shrubs.  I have never seen as many Warbling Vireos in one session as this morning (I estimate 20, but there could have been many more, had 5 in one binocular view!)

Highlights:
Blue-headed Vireo (at least 2)
Cassin's Vireo (2)
Warbling Vireo (20+)
Red-eyed Vireo (1)
Nashville Warbler (5+)
Black-and-white Warbler (1f)
American Redstart (1f)
Tennessee Warbler (1)
Yellow-breasted Chat (1)
Black-chinned Hummingbird (one f has been in the same area over the trail for 3 days straight, chipping constantly, flying to different perches, never going to a nest, never revealing an owl or snake or other problem).
Hermit Thrush (1)
Ruby-crowned Kinglet (2)
Wilson's Warbler (who knows?  many many)
Nightjar sp. (flushed, got no look, really, gave a muted "chuck, chuck...........chuck", probably C. Poorwill)
Hammond's Flycatcher (1)
Northern Cardinal (heard)
Red-bellied Woodpecker (heard)
Mississippi Kite (still a big flock of mostly young birds in town, they will leave any day)

Lowlight:
NO Canada Warbler

[After looking at photos, we decided the probable Black-throated Green Warbler reported yesterday was actually a Townsend's.  We also decided the probable Yellow-bellied Flycatcher seen two days ago and photographed extensively at point blank range (photos circulated to experts) was a young YELLOW-BELLIED FLYCATCHER.  The probable YBFL yesterday (not photographed) is best left in the probable category (may or may not have been the same individual, given the number of this species reported on the eastern plains of late).]

If you are coming to Lamar any time soon, it is worth checking Thurston Reservoir.  There is a small area of water viewable by scope from either the south side boat ramp or the two-track dirt lane coming in off the CR in the northwest corner.

Species total for the Lamar area this visit (9/12-17): 100 (only 9 waterbirds, total of 15 warbler spp.)

Tempel's Grove (Bent):
Fairly quiet, but the area under the tall cottonwoods west of CR35 on the south side of the ditch (which is getting a run of water at present) had the following:
Ovenbird (1)
Yellow-rumped Warbler (2)
Western Tanager (1)
Empid (probably "Western")
Red-breasted Nuthatch

East of CR35 along the ditch in Tempel's Grove was an Eastern Phoebe.

I would reiterate, food for insectivores is abundant and diverse right now in southeastern CO.  The array of small moths is impressive and the birds are chowdering their share (i.e., the fluff is flying).  Vireos, flycatchers, and warblers are really having a feast.  A few individual grackles seem to have a thing for the big dogday cicadas.  A number of vireos and warblers today scored lime green caterpillars from the deciduous trees (I think what they called "green fruitworms").  The number of sulfur butterflies is quite impressive in unsprayed alfalfa.  Thousands litter the highways and dirt roads, victims of vehicles.  A nighthawk was feeding over one of these fields, and lots of Swainson's Hawks are sitting around, more in p-dog towns than alfalfa.

I am heading home tomorrow, back to the reality of normal birding and flood aftermath.

Dave Leatherman
Fort Collins


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