Documentation of
Alder Flycatcher
2016-116
Observer Information
Reporter:
David Dowell
3721 Staghorn Dr,
Longmont,
CO 80503
E-mail:
dave1wx@gmail.com
Other Observers:
Kathy Mihm Dunning
Species, Date, Time and Location Information
Species:
Alder Flycatcher
First Date/Time:
9/10/2016 9:25:00 AM
Last Date/Time:
9/10/2016 9:35:00 AM
Duration (total time in view):
10 minutes
County:
Kit Carson
Specific Location:
Flagler Reservoir State Wildlife Area
Number:
1
Age:
Immature
Sex:
Unknown
Plumage:
Other/Unknown
Habitat
bushes and trees along seasonal stream south of lake
Viewing Conditions
Optics:
binoculars, camera
Distance:
as close as 20 feet
Light:
full sun; bird sometimes in sun, sometimes in shade
Description of the Bird
We observed the bird, clearly an empidonax flycatcher, on low perches for about 10 minutes. Observed characteristics were relatively bulky appearance for an empid; wide tail; olive back; long primary projection; high-contrast white and yellowish-white edges on tertials and secondaries; yellow/buffy wingbars (suggestive of a first-year bird); whiteish belly and flanks (little or no yellow apparent); slight gray wash on breast; white throat; grayish face; thick bill, dark on top and pale on bottom; and complete, narrow eyering. The attached photos are representative of what we saw through binoculars. One exception is that the eyering appears wider in some of the photos than it did in the field, as is often the case.
The bird flipped its tail upward several times during the 10 minutes. The bird was silent the entire time.
Similar Species Discussion
Since the bird did not call, its ID is based on visual characteristics through process of elimination. Based on the bulky appearance, wide tail, and large bill, we narrowed down the list to the larger empids: Willow, Acadian, and Alder. Willow was eliminated because it would have had an imcomplete / less well defined eyering. Acadian was eliminated because it would have had yellower underparts and a larger bill.
Resources Used
Sibley Guide to Birds
We also discussed the ID with Tony Leukering.
Previous Experience
We observe empidonax flycatchers regularly during the warm season. I have seen about a dozen Alder Flycatchers in Colorado and a few more farther east. Kathy has been birding longer than me and thus has more experience with empids.
Notes
Notes made DURING observation
Date Documentation Submitted
2/4/2017 10:00:00 AM
|
Click left or right edges of photos to move through all; click outside image to close
|
|
|
|
|
|
|
Location Map
The marker on the map shows an approximation of the location of this report. The marker is generated using a prioritized Logic base:
1) If the observer has entered coordinates, they will be shown.
2) No specific coordinates are available but the location is mappable.
3) A generic location with no specific coordinates is mapped to the center of the reported county.
Powered By Subgurim(http://googlemaps.subgurim.net).
Google Maps ASP.NET