Monday, 7 September 2020

[cobirds] Neotropic Cormorant, Buff-breasted Sandpiper, Jaeger sp., and others - Barr Lake SP

Hi all,

Barr Lake was phenomenal this morning for migrants. I started off below the dam, which had a Cassin's Vireo, Nashville Warbler, and early Brown Creeper among the hordes of Wilson's Warblers. Also present were Hammond's, Dusky, and Willow Flycatchers, Townsend's Warblers, and throngs of Wilson's Warblers (I tallied 134 of them today).

I then went to boat launch to scan for gulls and terns. One of the first birds I laid eyes on was a Neotropic Cormorant. It was between the boat launch and the dam on a slender island. While looking at the cormorant through my scope, a juvenile jaeger made several passes above the dam. Given its robust flight and relatively large appearance, among other things, I'm thinking Pomarine/Parisitic (leaning the former). Also in the area was a nice flock of Stilt Sandpipers. 

After this, I went to the nature center where the continuing Philadelphia Vireo was providing great views. It was with a Warbling Vireo in the tall deciduous trees at the entrance.

I then walked out onto the mudflat to search for Doug Faulkner's Buff-breasted Sandpiper, and found it with a flock of Killdeer in the SE corner of the lake. Other birds there included a diverse assortment of waterfowl and a flock of 17 Red-necked Phalaropes. On the way back to the parking lot, I saw a Pink-sided Junco among a mixed flock near the banding station (apparently Colorado's first eBird record this fall).

Overall a great outing, although it was getting warm and smoky toward the end.

Good Birding,
Jack Bushong, 
Louisville, CO

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