Verification of Unusual Sight Record
For Utah

Rec. # 2024-84


Common name:

Brown Thrasher

Scientific name: Toxostoma rufum
Date: 11/6/24
Time: 11:00 a.m.
Length of time observed: Off and on for maybe 5 minutes.
Number: 1
Age: Adult
Sex:  
Location: My backyard in Holladay, Utah
County: Salt Lake
Latilong: 40.681, -111.836
Elevation: 4493
Distance to bird: 20 yds
Optical equipment: Swarovski EL 10x42; Canon R7 w/ RF100-500 lens
Weather: Partly Cloudy
Light Conditions: Relatively dark shade
Description:        Size of bird: 10" - 11" long
(Description:)       Basic Shape: Longish tail, longish and slightly curved bill
(Description:)  Overall Pattern: Rusty back, tail, top of head; rusty streaked breast, off-white vent, two short light wingbars
(Description:)            Bill Type: Curved
(Description:)                              
Field Marks and
Identifying Characteristics:
Obviously a thrasher by body structure, bill shape and yellow eye, the rusty tail, back, head and messy breast streaking led to the Brown Thrasher i.d.
(see photos)
Song or call & method of delivery: I did not hear it vocalize, I was in my kitchen looking through a window and did not exit for fear of spooking, so even if it was vocalizing I wouldn't have heard it.
Behavior: It was scratching around in leaf litter under thick bushes and pines along our fence.
Habitat: See above.
Similar species and how
were they eliminated:
The only other species I consider reasonable is Sage Thrasher (several late SATHs were being seen around this time), which I initially mistook it for, to the extent it looked like it might be a little rusty I figured was filtered light making it look that way. It was quite shady in the small sight window I could see it in. I took a couple of pics, told my wife Mary it was weird to have a Sage Thrasher in the yard (would have been good new yardbird), and that this one seemed to have a little more rust than usual but was shady and weird light, and then tried to get additional looks but it had moved out of the sight window. Later I looked at my pics, they were really dark but I lightened up and lo and behold, the rusty tail, back, top of head, slightly heavier bill, and messier and darker breast streaking were apparent.

(Long-billed Thrasher is perhaps the most similar to the Brown Thrasher in terms of plumage, but would be so far out of range it didn't seem worthy of serious consideration; Max and Bryant's subsequent confirmation of BRTH vocalizations further puts nail in the coffin of that species.)
Previous experience with
this & similar species:
I've seen maybe a dozen Brown Thrashers in Minnesota, and had one in Utah along the Jordan River during a CBC several years ago.
References consulted: Sibley Guide to Western Birds
Description from: From memory
From photo(s) taken at the time of the sighting
Observer: Mike Malmquist, Mary Malmquist
Observer's address: 1957 East Longview Drive, Holladay, Utah
Observer's e-mail address: **
Other observers who independently identified this bird: Bryant Olsen and Max Malmquist identified the bird by ear in the neighbor's back yard later in the evening, it was in a very thick hedge row along a fence and not visible. It responded to playback. It could not be re-found thereafter.
Date prepared: 11/27/2024
Additional material:

Photos

Additional comments: I believe the photos are definitive. Here is the eBird Checklist: https://ebird.org/checklist/S201624776 In addition, I emailed the photos to utahbirds@gmail.com