43-B-2016 White-rumped Sandpiper

STATUS
Accepted
DATE VOTING COMPLETED
1ST ROUND
7-0
HOW MANY OBSERVED?
1
DATE SIGHTING OCCURRED
DATE REPORT PREPARED
REPORTER
Alex Lamoreaux
LOCALITY OF OBSERVATION
Lake Cascade--Sugarloaf Area North, Valley County, Idaho
HABITAT WHERE THE BIRD WAS OBSERVED
Shoreline of lake
SIGHTING DURATION, CONDITIONS, and EQUIPMENT USED
2.5 hours, clear and sunny skies
DID YOU TAKE NOTES?
Yes, during the observation
DID YOU CONSULT A FIELD GUIDE OR OTHER REFERENCE WORK?
No, not at all
DESCRIPTION OF THE BIRD(s)
Adult foraging with Western Sandpipers along the shoreline. First noticed due to larger, longer size with longer legs and more drooped-over foraging style. Closer inspection confirmed reddish base to otherwise black bill, and reddish color to black legs. White rump obvious when in flight. Molting out of breeding plumage, but mostly black and gray with slight rufous in upperparts and streaking along flanks. It's right eye was missing, and the eye socket was shriveled shut.
BEHAVIOR OF THE BIRD(s)
Foraging with Western Sandpipers
HOW AND WHEN DID YOU POSITIVELY IDENTIFY THE BIRD, AND WHAT CLINCHED THE IDENTIFICATION FOR YOU?
IDed when first spotted
HOW DID YOU ELIMINATE SIMILAR SPECIES? WHAT WERE THEY?
See description above...photos included in this eBird list: http://ebird.org/ebird/view/checklist/S24252090
WHAT IS YOUR EXPERIENCE WITH THIS (AND SIMILAR) SPECIES?
I've seen 100s
DESCRIBE YOUR GENERAL BIRDING EXPERIENCE
Professional birder
WERE PHOTO(S), VIDEO, AND/OR AUDIO OBTAINED FROM THIS SIGHTING?
Photo
SUPPORTING IMAGES

FIRST ROUND VOTING:

Cliff Weisse
Accept

Description and photos include field marks that support the identification of White-rumped Sandpiper.

Charles Swift
Accept

Very nice!

Shirley Sturts
Accept

Good description and photo

Dave Trochlell
Accept

Although I have little experience with White-rumped Sandpiper, I believe that the bird's white rump that's visible in flight is distinctive for the species. The flanks of this bird seem almost unstreaked, but perhaps that's a feature that can vary quite a bit. The reddish base to the bill was also convincing.

Doug Ward
Accept

Descent description with key identifiers noted. The attached photos are diagnostic for this species showing structure, red base to lower mandible, as well as full white rump in flight.

Jay Carlisle
Accept

Great pics & key fieldmarks described

Darren Clark
Accept

Photos and written description support identification of White-rumped Sandpiper and eliminate similar species