Hi Van,
Your mystery bird actually sounds just exactly like a Rock Wren to me. The
bobbing behavior is very distinctive for them.
And they're on the move now; I had two in my backyard yesterday and one this
morning. (It's pretty common to have them here during migration; they seem to
like our brick patio.)
Peter RuprechtSuperior
On Sunday, October 4, 2020, 7:24:12 AM MDT, J V Rudd <[email protected]>
wrote:
Hi all,Had a great day at RMA with a Lesser Yellowlegs & a Sage Thrasher being
added to my 2020 list. https://ebird.org/checklist/S74362841However, there was
a 3rd bird which stumped me. I initially thought it was a Rock Wren given the
long bill (too long for a Vireo), drab cream-colored breast (no stripes like a
Sage Thrasher), size (slightly larger than the other Rock Wrens we saw), and
eye stripe (very bold). However, it wasn't anywhere near a rock.
We saw it twice, once on top of an outhouse building, and then on some logs. It
was foraging for insects and not making a sound. One interesting behavior I had
not seen before in Rock Wrens: it was bobbing up and down. Not rocking, not
tail flicking, it looked like it was doing deep knee bends! I have never seen
this.
Later on we saw two other Rock Wrens (on rocks this time) and the eye stripe
was less distinct and there was no bobbing. they also looked smaller than the
bird we saw.
One last identifying feature: the bird had black and white bands on the
underside of its tail.Any help would be greatly appreciated.Good birding,Van
RuddLouisville, CO
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