ML623584401

觀察細節

!! Would represent first accepted Marin county record if accepted by the CBRC. Full description to CBRC. Studied at length and photographed, key marks including: Full white eyering Boldly contrasting wing panel including wingbars and tertial edgings Greenish back Rounded head Overall cold-toned grayish overall (fine for Eastern Willow, not Western Willow) The most distinctive part about the bird vs a Willow, however, were the vocalizations. It took quite a bit of waiting, but eventually the bird started "pipping", a call rarely given by Willows. We obtained recordings of the call which, while not the most typical Alder pip out there to me, still seemed to be an Alder pip rather than a Willow Flycatcher vocalization. Unfortunately (sort of), there was a Hammond's Flycatcher in the area for a chunk of time, which also give pip notes. However, the calling Traill's was the only one of the two present for quite some time, and it was very apparent it was the Traill's and not the Hammond's calling. The bird did not give any other vocalizations while we watched it. Dessi will upload his recordings (and Ethan some photos) in the near future. The bird was located in the Blackberry Swale across from the shack and the Cypresses across the trail.