Black Guillemot (mandtii) - Sean Williams
Report

Contributor

Date

Location

MacMillan Wharf
Barnstable, Massachusetts, United States
Media from this location Illustrated Checklist
Map
Map Coordinates: 42.0494838, -70.181694
Age
Not specified
Sex
Not specified

Observation details

Continuing first state record, found by Peter Flood and Kate Sutherland on 12/16. The stark white head and pale gray back on an immature bird (identified as a 1st year by the black bars going across the white greater and lesser coverts) is more typical of Mandt's than the grylle group. In flight, the greater and median primary coverts were tipped white, giving the appearance of two “fingers” extending beyond the greater and median coverts. These coverts are entirely black in grylle birds. On the underwing, the white of the five outer primaries have extensive white on the inner webbing, which is all black in the grylle group. Only one recent confirmed record for the east coast of the United States exists- an individual on Long Island, NY in 2009. However, there are supposedly specimens from 100-150 years ago, even one from Massachusetts, but the fates of those are unknown.

Technical information

Model
Canon EOS 7D Mark II
Lens
EF400mm f/5.6L USM
ISO
250
Focal length
400 mm
Flash
Flash did not fire, auto
f-stop
f/5.6
Shutter speed
1/1250 sec
Dimensions
2420 pixels x 1614 pixels
Original file size
2.23 MB