I had the good fortune of a wood-pewee showing up outside my office window this morning (3085 Center Green Drive, northeast Boulder). Took some poor digibinned photos (in linked checklist below).
Along the railroad tracks west of Center Green 2 (3085 Center Green Drive).
I found this bird to lean more towards Eastern than Western Wood-pewee. Because this is an immature bird, I am hesitant of the colorations since it is a hatch-year bird.
- Strong buffy wingbars of equivalent brightness to each other.
- Long primaries compared to tail.
- Coloration of back and head seemed more brownish (dirty) than grayish (rather than ashy).
- Vested look is much more like Olive-sided Flycatcher than the washed out Western Wood-pewee I am used to. This individual showed a distinct open-vested look with an obvious white stripe down its chest.
- When viewed from below, the undertail coverts seemed more yellowy, and less smudged than I have seen previously with Western Wood-pewee.
- Maxilla dark.
- Mostly yellow mandible (70-80%).
- Eyering.
- Crested look at times.
- No tail flicking.
Along the railroad tracks west of Center Green 2 (3085 Center Green Drive).
Here is my eBird checklist if anyone needs to see the photos.
Feel free to refute this claim as well as this would be a first for me in terms of differentiating. Seen plenty of both species, just never found one in the "others territory".
Bryan Guarente
Meteorologist/Instructional Designer
UCAR/The COMET Program
Boulder, CO
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