2-B-2019 Band-tailed Pigeon

STATUS
Pending
HOW MANY OBSERVED?
1 immature
DATE SIGHTING OCCURRED
DATE REPORT PREPARED
REPORTER
Jay Carlisle
OTHER OBSERVERS
IBO field crew at Lucky Peak, including Leah Rudge, Aya Pickett, and Sarah Heimbach
LOCALITY OF OBSERVATION
IBO's Lucky Peak field station, Ada County
HABITAT WHERE THE BIRD WAS OBSERVED
Montane deciduous shrubs dominated by bitter cherry
SIGHTING DURATION, CONDITIONS, and EQUIPMENT USED
2 minutes for me, Sarah had seen it previously in the morning but hadn't realized the significance or told others - thus, in total at least an hour.
DID YOU TAKE NOTES?
Yes, during the observation
DID YOU CONSULT A FIELD GUIDE OR OTHER REFERENCE WORK?
Yes, during the observation
WHICH GUIDE(S) OR REFERENCE(S): DID YOU CONSULT?
Sibley app
DESCRIPTION OF THE BIRD(s)
A grayish pigeon - noticeably larger than Mourning Dove or Eurasian Collared-dove. Description in eBird report submitted soon after sighting, "1 bird in immature plumage feeding on dried cherries; pale yellow bill base, paler band on outer tail. Much larger/chunkier than Eurasian Collared-dove." The bird was uniformly dull gray aside from the fieldmarks mentioned above.
BEHAVIOR OF THE BIRD(s)
feeding on dried cherries in the top of shrubs - I didn't notice it until it flushed a short distance.
HOW AND WHEN DID YOU POSITIVELY IDENTIFY THE BIRD, AND WHAT CLINCHED THE IDENTIFICATION FOR YOU?
Almost instantaneously - just took a moment to process :-) Size relative to doves, pale outer tail, and yellow base to bill were the keys.
HOW DID YOU ELIMINATE SIMILAR SPECIES? WHAT WERE THEY?
Mourning Dove & Eurasian Collared-dove ruled out above; separated from similar-sized Rock Pigeon by pale outer tail and yellow base to bill.
WHAT IS YOUR EXPERIENCE WITH THIS (AND SIMILAR) SPECIES?
Lots. I've seen Band-tailed several times in Idaho and have seen many hundreds elsewhere - especially in Washington, Arizona, and many Latin American countries.
DESCRIBE YOUR GENERAL BIRDING EXPERIENCE
25+ years of active birding in the US & internationally
WERE PHOTO(S), VIDEO, AND/OR AUDIO OBTAINED FROM THIS SIGHTING?
None