Apologies for the late report for Saturday's (Dec 15) Triadelphia CBC.
We found approximately 25 RED CROSSBILLS feeding in Virginia pine at Rocky
Gorge reservoir near the dam in West Laurel, PG County. They were
identified as Type 3 by a colleague and eBird reviewers using sonograms
generated from recordings we obtained. The birds were very active for
about 10 minutes before flying across the reservoir to the Howard County
side. The trees had lots of cones so maybe they'll stick around the area
for a while (please note however the PG County access to the reservoir via
Supplee Lane is closed for the season -- we had special permission from
WSSC to bird the area).
Here's a link to my full eBird report (including pictures of the
sonograms) for this location:
http://ebird.org/ebird/view/checklist?subID=S12296229
D
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Derek C. Richardson, Laurel, PG County, MD
http://www.astro.umd.edu/~dcr/personal.html
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