Wednesday, May 8, 2019

Pacific-slope Flycatcher

Perhaps the most interesting bird we photographed on 4 May 2019 at the Glacial Heritage Preserve was this Pacific-coast Flycatcher. This bird was not new for us, but was a first for our photographic efforts. Until 1989, ornithologists thought considered this bird to be a race of the Western Flycatcher. But then, due to their having different calls, measurements, and DNA patterns, these coastal birds were given species status. At the same time, Western Flycatchers in the interior Rockies were renamed as Cordilleran Flycatchers. The two new species very difficult to tell apart in the field, are mostly separated by range. Note the tear-shaped, white eye-ring, a field mark of the old “Western” Flycatcher. The habitat where we found this bird was also typical—stream-side, second-growth woodland. The species is also found in coniferous forests. We also heard this bird call, a wheezy, upward inflected whistle.

No comments:

Post a Comment