Friday, February 12, 2010

Rocky Mountain Arsenal & Banner Lakes Wildlife Area

February 11, 2010

Richard Stevens:

I arrived at Rocky Mountain Arsenal (Adams County) at 7:30 am when it opened on Thursday. Dark-eyed Juncos started to come to the feeders at 7:50 am. Shortly thereafter, the Harris's Sparrow followed the juncos. They stayed until about 8:30 am. Once the Dark-eyed Juncos started to leave, so did the Harris's Sparrow.

Next, I went to Banner Lakes Wildlife Area (Weld). I wanted to cover the property as much as possible. Eventually 13 Long-eared Owls were found scattered around locations. My technique as stated before is to walk with the windbreaks between the sun and myself. The silhouettes of the Long-eared Owls can be picked out of the windbreak somewhat with ease.

A Townsend's Solitaire called near Pond # 6 during my stay there. The bird became quite irritating. Quite a few Dark-eyed Juncos scurried along the ground under the windbreak in search of food. Many Robins also hid in the windbreak comprised of mostly Russian Olive Trees and Firs.

A few Northern Flickers and a pair of Downy Woodpeckers were also found. A Great Horned Owl flew out of the windbreak near Pond 7. She stayed in one of the taller cottonwoods along Pond 7 until I left the area.

The absence of sparrows is interesting. Not just here, but I am finding few sparrows at just about every place birded around Denver (Cherry Creek Reservoir, Chatfield Reservoir, Aurora Reservoir, etc). What's up with that? West Nile virus?, normal down turn in number? loss of breeding habitat? just went somewhere else this year? Strange!

Great-tailed Grackles are once again around the feedlot at the first house south of the Tree Nursery at 152nd Avenue and Picadilly Road.

A few Dark-eyed Juncos and 3 White-crowned Sparrows were visiting the feeders behind the Visitor's Center at Barr Lake State Park (Adams).

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