[TN-Bird] Gray-cheeked / Bicknell's
- From: "Chris Sloan" <chris.sloan@xxxxxxxxxxx>
- To: "TN-Bird Listserv" <tn-bird@xxxxxxxxxxxxx>
- Date: Fri, 6 May 2005 18:17:17 -0500
Gray-cheeked Thrushes have been persistently singing and calling in the
yard (w. Nashville) since last Sunday. A few minutes ago, a couple were
singing, and I decided to listen to a taped call of a Bicknell's Thrush
for comparison purposes. I found it interesting that both of the
singing birds immediately came in and acted very agitated. One was
bill-wiping (a displacement behavior) so furiously that I thought it was
going to hurt itself.
There has been a lot of discussion about the validity of this split,
and, while it's not uncommon for sibling species to respond to calls of
their sister taxa, it's pretty suggestive to me from such a strong
response from a sympatric species that perhaps the split should be
revisited.
In other news, Rose-breasted Grosbeaks are threatening to eat us into
bankruptcy. We've had as many as 7 on the trey feeder at one time, and
countless more around the yard. We went through like 30 pounds of seed
last week, which is pretty amazing for just one and a half feeders.
Chris Sloan
Nashville, TN
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