Wednesday, September 8, 2010

Return to Rocky Mountain Arsenal and Aurora Reservoir

September 8, 2010

Richard Stevens:

Bryan Ehlmann and I enjoyed another interesting birding day. Again, at 6:00 am we stood inside Rocky Mountain Arsenal and listened for owls. It is still a little too light (sunrise 6:34 am) but soon it will be dark at 6:00 am (when the arsenal opens). Owling (Long-eared and Barn Owls) has been most successful in the dark.

After sunrise, we made the 6.0 mile loop around the Lake Ladora, Rod & Gun Club Trail and Havana Ponds.

The tree line below the Lower Derby Lake dam was quite birdy. The most uncommon birds were a Cassin's Vireo and Townsend's Warbler. We had run into another Townsend's Warbler at the southwest corner of Lake Ladora. Other birds included 9 Wilson's Warblers, 2 White-breasted Nuthatches, a Red-breasted Nuthatch, 7 Western Kingbirds, 2 Eastern Kingbirds and an unidentified Empidonax flycatcher.

On the way to the R&GC bird blind, we saw a Sage Thrasher, 7 Lark Sparrows and a dozen Dark-eyed Juncos. The trees around the bird blind were also birdy. The highlight bird was a Blue-headed Vireo. Another 3 Wilson's Warblers, 2 White-breasted Nuthatches and a Red-breasted Nuthatch were also seen.

A detour was made to the Havana Ponds area to look for Sabine's Gulls. There were no Sabine's Gulls, but 7 California Gulls were among 35 Ring-billed Gulls.

Later Sue Ehlmann, Rebecca Kosten, Jacob Washburn and Amy Davenport joined us and we relocated the Blue-headed Vireo, Cassin's Vireo and Townsend's Warbler.

Late in the afternoon, Bryan and I returned to Aurora Reservoir.

On the way, we passed the Great Plains Park. The Burrowing Owl found yesterday, was almost in on the same fence post. At Aurora Reservoir, the two Common Loons were found, but not much else uncommon. There was no owl action at dusk.

No comments: