Winter Wren in Sacramento County
I received a couple of suggestions to post this to a wider audience.
Although the site has no public access, the occurrence of this bird in
the Central Valley may be of statewide interest.
While performing a bird survey on 27 Nov 2011 on a closed portion of
Cosumnes River Preserve, a Winter Wren responded to a broadcast
Pacific Wren song at ~1025 am. It flew in and called on and off for
about 10 minutes. The bird sounded like an eastern bird and the
plumage details appear to be consistent. Unfortunately there is no
public access to this site and it is a four-mile round trip through
thigh high vegetation.
I was initially tentative about the ID, but comments received have
been positive and I believe this to be a Winter Wren.
Videos with audio and video stills of the bird are here:
I also uploaded video of a calling "Winter Wren" (in the broad sense)
from 5 Dec 2009 that had a call similar in quality to the call note of
Song Sparrow. This sounds less like the Winter Wren (in the strict
sense) recordings from eastern North America found on xento-canto
(http://www.xeno-canto.org/browse.php), but more song sparrow-like
than most Pacific Wrens I hear. I especially welcome comments on this
bird, since it sounds different from the 27 Nov 2011 bird, but also
different from a Pacific Wren.
Pacific Wren is a rare but regular winter resident in dense riparian
forest in Sacramento County and elsewhere in the Central Valley.
All the best,