Willow Flycatcher

Empidonax traillii

ML28695581


©
Curtis Marantz
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eBird Checklist S29545941
Desert Center--Lake Tamarisk
Riverside, California, United States
Search this location, Illustrated Checklist
Latitude and Longitude 33.7403, -115.3948 Map

Age
Adult
Sex
Male
Behaviors
Breeding
Tags

Comments

This early Willow Flycatcher was photographed by Curtis A. Marantz on 6 May 2016 at Desert Center, Riverside County, California. We identified this bird as a male based on the "fitz-bew" calls that it gave on several occasions.

Observation details

Given the photos and the description below for the first bird by Louis, I did not write a description of this bird despite my studying it closely. I can however note that the bird at the fish ponds, which we saw foraging by sallying out from the tamarisk trees low over the water, was seen at moderate distance, yet clearly and Empidonax with brownish-olive upperparts, no apparent eyering but a weakly peaked head, and dull wingbars on wings that were darker than the upperparts. This bird also had a whitish throat and a cream-colored belly, but the breast was clouded a little darker. I was also at least moderately confident that I saw a pale lower-mandible on this bird, which despite being silent and not seen quite as well as the better-documented bird, appeared to be similar in its behavior, size, structure, and plumage patterns and coloration. One was along the oleander line at north edge and seen foraging, mostly below eye-level, into flowering Ironwood (Olneya tesota) on desert side. The other was foraging low along a line of tamarisk trees bordering the interior island of the eastern 'fish' pond. The first bird was giving a strong whit and gave a few snatches of 'fitz-bew' song (photos and recording of call). Both of these birds were large, heavy-billed Empidonax with short primary projection, dull wingbars, no or only faint very thin pale eyering, olive-brown upperparts, white chin and throat with pale yellowish underparts. The mandible was entirely pale, dull yellowish to orangish yellow. The underwing marginal coverts were brighter yellow and showed at the bend of the wing (seen on first bird). The legs were blackish; the irides were dark brown. First bird seen to capture a bee in the Ironwood.

Technical Information

Model
Canon EOS 7D Mark II
Lens model
EF400mm f/5.6L USM
f-stop
f/6.3
Focal length
400 mm
Shutter speed
1/2000 sec
ISO
320
Flash
Flash did not fire, auto
Original file size
1,705KB
Dimensions
3510 x 2295

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