Common NameWestern Sandpiper
Scientific NameCalidris mauri
Type of ReportRare Species
Date of Observation09/11/2021
Media
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Number Observed1
Reporting Observer's NameMartha McClintock
Mailing Address10 Forest Ln
Westford, VT 05494-9783
United States
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Date Completed09/27/2021
Names & Emails of Other Contributing Observers

Bill McClintock

Latitude of Observation (enter 0 if unable to provide)45.00569281377633
Longitude of Observation (enter 0 if unable to provide)-73.1612105
Place NameLocation Missisquoi NWR--Tip of delta, West Branch
TownshipSwanton, VT
CountyFranklin
Vermont eBird Checklist URLebird.org
Time of Day10:30 AM
Length of Time Observedat least one half hour
Maximum Estimated Distance from Bird (in feet)50 ft
Minimum Estimated Distance from Bird (in feet)15 ft
Noteworthy Weather Conditions

Partly to mostly sunny but very windy. Many birds were hunkered down behind grass hummocks for shelter.

Optical Equipment Used for Observation

Nikon Monarch 10 x 42, Canon EOS Rebel T6i with 400 mm zoom, Celestron Regal M2 80ED

Observer’s Previous Acquaintance With This or Similar Species

I have seen two before. One last year at the same place. Once at Plum Island where it was pointed out to me by another birdrer

I certify that any attachments included with this report were captured during this observation event​​.
Description of Habitat

At the edge of the sandbar at the west branch of Mississquoi delta. There were a number of loose piles of grasses.

Behaviors Observed

When first seen, it was huddled, sleeping, with three other birds on the leeward side of a pile of grasses near the water line. I came back and observed it several time and the last time, it was up and moving around but not really feeding.

Description of Vocalizations

None heard

Verbal Narrative & Description of Observation

Five peeps were sleeping on a hummock, heads tucked in. I only noticed the slight difference in coloration and size at first as I was scanning with scope. A little later, several picked their heads up and I immediately noticed the differences in the bills, two typical SESAs, two LESAs and one bird had a longer bill than the LESA and definitely drooping. I moved closer and could better see the coloration. Bright white breast. Dark legs, a light gray head (the expected reddish spot behind eye was not apparent), gray brown back and wing feathers with white edges. I returned to the area several times to try to see this bird and , later, it was up and walking around. At this point the reddish behind the eye was clear and rufous scapulars more evident.

Relative Size & Shape

Seen with LESA and SESA. Definitely a bit larger and plumper.

Head

Head was gray. Crown a bit darker. A bit of a dark line in front of eye and a reddish smudge in back of eye.

Feet & Bill

Bill was longer and LESA and a bit drooping. Relatively slim and pointy. I thought that it might be a WRSA but there was no red at base of the bill. Legs were definitely dark as seen later when it was walking.

Upper Back

Brownish gray feathers with wide white margins. Rather streaky looking at the nape. Strong reddish appearance on scapulars.

Lower Back & Rump

Did not get great looks.

Wings

Did not see it fly. Does not appear as though wings extend beyond tail. Strong white margins on brownish wing feathers.

Breast, Belly, Flanks, Under Tail Coverts

Slight streaking at neck. Otherwise, the breast , flanks and belly look starkly white. Did not see under tail coverts.

Tail

Did not see

IMPORTANT: What similar species were eliminated when making the identification and how was this bird different?

I thought LESA but the bill was much longer and this bird was too large. I thought SESA but, again, bill was longer and the bird had definite reddish scapulars. (after studying photos, the lack of distinct supercillium is also important) My most likely suspect, at the time was WRSA but the bill clearly lacked a reddish base and the bird was also too plump and short looking, indicating that primary wing tips do not extend as a WRSA do.

Other Notes & Comments

I believe that the white breast and belly mean that this bird was a juvenile.

This report was written from notes taken:Immediately After