Verification of Unusual Sight Record
For Utah

Rec. # 2020-09


Common name:

Winter Wren

Scientific name: Troglodytes hiemalis
Date: 01-29-2020
Time: 3:00pm
Length of time observed: 10 minutes
Number: 1
Age: ?
Sex: ?
Location: Willard Bay State Park
County: Box Elder
Latilong: N 41.419216,-112.0564277
Elevation: 4250ft
Distance to bird: 2-5m
Optical equipment: Nikon 10x42 binoculars
Weather: sunny, 38F
Light Conditions: good
Description:        Size of bird: 4 inches
(Description:)       Basic Shape: plump and short tailed
(Description:)  Overall Pattern: rusty brown
(Description:)            Bill Type: short thin-insectivor passerine
 
(Description:)                              
Field Marks and
Identifying Characteristics:
First heard the Wren, noted calls seemed different than a Pacific Wren, less scratchy more of a chump than a check. played the Winter Wren call on my iBird Pro app to compare and bring the bird in for a better look, noted very small rusty brown wren with a short tail, but noticed throat was rather pale with some whitish mottling, unlike the very rusty throat of the Pacific Wren.I immediately got a recording of the wren, and upon uploading and comparing the graph with other recordings on Macualay Library, confirmed what I suspected in the field that this was indeed a Winter Wren. I also managed a few photos
Song or call & method of delivery: Distinctive chump call given repeatedly, also sang briefly
Behavior: Very active and sulky hiding in dense dogwood bushes along small creek
Habitat: Riparian thickets along a small creek
Similar species and how
were they eliminated:
Pacific Wren is very similar, and indeed they were considered the same species until just a few years ago, but Pacific has a scratchier, higher and thinner call. Also typically they have a very rufous throat and breast. This Wren had a paler throat with some whitish mottling.
Previous experience with
this & similar species:
Yes, I saw a Winter Wren in November 2018. I've seen many Pacific as well
References consulted: iBird Pro app for recordings
Description from: Notes taken at the time of the sighting
From photo(s) taken at the time of the sighting
Observer: Bryant Olsen
Observer's address: 84102
Observer's e-mail address: **
Other observers who independently identified this bird: Vivian Schneggenburger and Lauri Taylor were with me
Date prepared: 1-29-2020
Additional material: Photos  Tape (eBird)
Additional comments: eBird checklist(with recording embedded): https://ebird.org/checklist/S63920048