Saturday, September 18, 2010

Another Rocky Mountain Arsenal Visit

September 17, 2010

Richard Stevens:

After owling all night, Jacob Washburn and I birded Rocky Mountain Arsenal (Adams County). Again, no owls were found before sunrise; however, I still believe there are owls at the old Governor's Row (it just has to be dark to get them to respond to recordings).

Jacob and I hiked the 6 mile loop of Lake Ladora, Rod & Gun Club Pond and Havana Ponds. Sparrows were again quite numerous. We observed 8 species (Chipping, Song, Vesper, Lark, Brewer's, White-crowned, 2 Lincoln's and 1 Clay-colored). Total number was 182 sparrows.

We found a Townsend's Warbler along the canal below the Lower Derby Lake dam. A Plumbeous Vireo was in the trees below the dam, but along the road running north to south.

Most of the rest of the hike was uneventful.

After a few hours sleep, I was deciding on a place to bird for a couple of hours. I chose Cherry Creek Reservoir (Arapahoe) and as I drove over there, got a text message about a Palm Warbler at the Lake Loop.

Just after I arrived, Jerry Petrosky also arrived. We walked the tree line along the east side of the Lake Loop. The Palm Warbler was discovered with 2 Yellow-rumped Warblers in the trees at the water's edge. This was directly east of the north end of the 2nd parking area north of the main road (east Lake Loop). There is a dirt path leading to the water; the warblers were just south of that path.

Later, Jerry and I walked the west side of the Lake Loop over to the Mountain Loop and back. A Townsend's Warbler was just west of the Mountain Loop. An unidentified thrush skulked in the underbrush. Many mosquitoes eventually persuaded us to abandon more than a 15 minute search to id the thrush.

At the Smoky Hill Group Picnic area, we found a Cassin's Vireo in the tall trees south of the Pavilion. Thirty plus Chipping Sparrows lingering around on the ground. Not much else, the 200+ gulls at the swim beach were Ring-billed Gull and a less number of California Gulls.

We walked around the trees west of the swim beach and found another Townsend's Warbler, 2 Song Sparrows and a Lincoln's Sparrow. A small flock of 7 Black-capped Chickadees fluttered about the area also.

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