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: | |
| 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 |