ML616638421

Age

Not specified

Sex

Not specified

Observation details

**very rare; SY with retained juv belly. Traffic circle at Field 5. A bit more contrast between very black neck/breast and browner back, fore flanks and apron than expected on a typical adult, but this is attributable to immaturity and date; notably, the retained juv belly is subtly browner and lighter in tone than the formative fore flanks. This also explains why the rearward edge of the apron is slightly less distinct than in typical adult Pacific Black Brant (B. b. orientalis) and superficially suggestive of “Gray-bellied/Lawrence’s Brant” (B. b. nigricans, sensu Delacour and Zimmer 1952 and Buckley and Mitra 2002*)Despite its slightly diffuse rearward edge, the apron extends back well beyond the legs, as in orientalis. Furthermore, the bold and lacy neck collar (especially in a young bird) indicates orientalis. *The type specimen of nigricans, collected by Lawrence in NJ in the mid-18th century is not consistent with Pacific Black Brant, which should thus be referred to as orientalis (the name given to Black Brant breeding in the Russian Far East). Lawrence’s nigricans more closely resembles “Gray-bellied” Brant, which has occurred as a vagrant to eastern NA and Western Europe. https://www.usgs.gov/publications/three-geese-resembling-gray-bellied-brantlawrences-brant-long-island-new-york

Technical information

Model

iPhone 7

Lens

iPhone 7 back camera 3.99mm f/1.8

ISO

20

Focal length

4 mm

Flash

Flash did not fire

f-stop

f/1.8

Shutter speed

1/139 sec

Dimensions

3628 pixels x 2177 pixels

Original file size

4.48 MB