Common NameBlue-gray Gnatcatcher
Scientific NamePolioptila caerulea
Type of ReportOut-of-Season
Date of Observation12/24/2023
Media
Number Observed1
Reporting Observer's NameSam Darmstadt
Mailing Address521 Saint Paul Street
Burlington, Vermont 05401
United States
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EmailEmail hidden; Javascript is required.
Date Completed02/03/2024
Names & Emails of Other Contributing Observers

Chip Darmstadt -
Larry Clarfeld (Lexi and Ezra Clarfeld) -

Latitude of Observation (enter 0 if unable to provide)44.471008
Longitude of Observation (enter 0 if unable to provide)-73.220830
Place NameBurlington Waterfront--Wastewater Treatment Plant
TownshipBurlington
CountyChittenden
Vermont eBird Checklist URLebird.org
Time of Day08:25 AM
Length of Time Observed20 minutes
Maximum Estimated Distance from Bird (in feet)25 feet
Minimum Estimated Distance from Bird (in feet)5 feet
Noteworthy Weather Conditions

Cold, cloudy, no precipitation

Optical Equipment Used for Observation

Vortex Razor HD 10 x 42 Binoculars
Swarovski EL 10 x 42 Binoculars

Observer’s Previous Acquaintance With This or Similar Species

Both observers have extensive experience with seeing and hearing Blue-gray Gnatcatchers in Vermont and throughout both the eastern and western United States. Between the two primary observers, they also possess some, but limited, experience with Black-tailed, Black-capped, and California Gnatcatchers.

I certify that any attachments included with this report were captured during this observation event​​.
Description of Habitat

Shrubs/thickets along the bike path at the burlington waterfront. Mostly in bushes but also on the bike path, stones, grassy lawn, and metal benches.

Behaviors Observed

We watched it feeding pretty actively on arthropods.

Description of Vocalizations

Classic wheezy gnatcatcher calls. Consistent with the eastern subspecies of Glue-gray Gnatcatcher.

Verbal Narrative & Description of Observation

"A big surprise while Sam and I were walking the dog along the Burlington waterfront! Small gray bird with a very long tail often held upright while foraging. Fairly uniform gray overall, with white eye ring and long black tail with white outer tail feathers. No other facial markings. White edging to tertials, but otherwise no wing bars. Underside of tail difficult to see, but looked white on outer edges and black centrally. Gave a nasal wheezy call a couple of times. The bird was foraging actively on the ground, flitting up to some maple saplings and conifers next to the VT Railway building. Poor photos. Super late (first December record for Chittenden Co. according to eBird)." - written by Chip on eBird mobile the first day we observed the bird.

"Continuing super late bird. Now the state late date. Appeared right away as we got out of the car in the Perkins pier parking lot. Photos and audio." - written by Sam on eBird mobile the second day we observed the bird (https://ebird.org/checklist/S157120604)

IMPORTANT: What similar species were eliminated when making the identification and how was this bird different?

All other North American gnatcatchers species were eliminated by differences in vocalizations. California and Black-tailed Gnatcatchers were eliminated by undertail pattern (both species lack the extensive white on the outer rectrices seen in Blue-gray Gnatcatcher and have more black undertails with white edging on some feathers). Black-capped is harder to eliminated by undertail patter but is eliminated by the presence of a pinkish base to the lower mandible, bold white eyering, and vocalizations.

Other Notes & Comments

Age and sex were not determined. We observed the bird again on the following day which is when better pictures and well as audio and video were obtained: https://ebird.org/checklist/S157120604. Larry Clarfeld and his two kids also observed the bird later in the day on December 24th.

This report was written from notes taken:Immediately After