Friday, December 20, 2013

Another Look at Aurora Reservoir

December 17, 2013

Richard Stevens:

Jerry Petrosky, Bill Cryder and I hiked the southern and eastern sides of Aurora Reservoir (Arapahoe County).  Most of the interesting gulls were in Lonetree Cove (mile 3.0) which cannot be seen from other locations around the reservoir.  One can hike down from the southern entrance and reduce the walk to less than 1.5 miles.

One of two Great Black-backed Gulls previously reported two of the six Lesser Black-backed Gulls and two of the ten Thayer's Gulls were observed here.  A dozen California Gulls and 80+ Ring-billed Gulls were also present.

As we returned to the entrance, we noticed a large "whitish" Gull at Senac Cove (mile 2.5, also difficult to see from the swim beach or dam).  We took photos and called the bird the Glaucous Gull that has been around.  Later examining the photos, we decided that it was not a Glaucous Gull but perhaps the possible Glaucous-winged Gull that has been reported on several occasions.

After lunch, Jerry and I drove to a friend's ranch east of Banner Lakes Wildlife Area (Adams County, closed on Tuesday).  Two Long-eared Owls continued at the windbreak surrounding my friend's home.

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