Verification of Unusual Sight Record
For Utah

Rec. # 2016-29

Common name:

Ruby-throated Hummingbird

Scientific name: archilochus colubris
Date: 09/6/16
Time: 5:30 PM
Length of time observed: A total of 20 minutes
Number: 1
Age: Female type possible juvenile
Sex: Female type, possible juvenile
Location: Back yard in Roosevelt, Ut.
County: Duchesne
Latilong: ?
Elevation: 5,100 ft
Distance to bird: 50 yards
Optical equipment: 25X Bushnell Spotting Scope
Weather: Cear
Light Conditions: sun was setting, but good light
Description:        Size of bird: a few inches
(Description:)       Basic Shape: hummingbird
(Description:)  Overall Pattern: green back white underside
(Description:)            Bill Type: black
Field Marks and
Identifying Characteristics:
First seen sitting directly opposite from a female black-chinned hummingbird. First noticed the more green back and dark auricular patch. When the bird came back I noticed the white throat and breast and what looked like a whitish collar that stopped at the back of the neck. The bird has a short primary projection and shorter bill than a black-chinned.
(see photos)
Song or call & method of delivery: none
Behavior: sitting and drinking from a feeder. Chasing away a female black-chinned hummingbird
Habitat: Backyard with a hummingbird feeder
Similar species and how
were they eliminated:
Female black-chinned. Black-chinned has a longer bill, longer primary projection, uniform gray underside including the side of the face.

The bird I saw has a shorter bill, shorter primary projection, more white on the throat and breast with a greater contrast on the face with the dark auricular patch.
Previous experience with
this & similar species:
I have seen a few back east.
References consulted: Sibley Guide
Description from: From photo(s) taken at the time of the sighting
Observer: David Taylor
Observer's address: 2203 W 200 S, Roosevelt, Ut
Observer's e-mail address: **
Other observers who independently identified this bird: [Brian Maxfield and Jim Taylor identified the bird from the photos but did not see the bird in person].
Date prepared: 9/9/16
Additional material: Photos
Additional comments: