ML113509061

Age

Not specified

Sex

Not specified

Observation details

Dark morph juvenile first found earlier this morning by Aaron Batterbee. Medium sized all-dark jaeger with light cinnamon barring on underparts and neck. Seen fairly well although briefly at very close range while it was harassing gulls. Long-tailed Jaeger eliminated by the 5+ white primary shafts on the wing upperside, as opposed to only two in Long-tailed (fide Kaufman, 1990), as well as a bulkier appearance than expected for that species. Pomarine was more difficult to eliminate definitively, but the thin bill with little hint of a gonydeal angle, fairly small head, slightly paler nape, as well as the smaller size and seeming more slender and agile than expected for Pomarine and certainly from what I remember from a previous sighting of that species. Unfortunately was not able get a great look at the central tail feathers, so was unable to use that as an identification aid. Photos by Andrew Miller

Technical information

Model

FinePix HS50EXR

ISO

100

Focal length

185 mm

Flash

Flash did not fire, auto

f-stop

f/5.6

Shutter speed

1/640 sec

Dimensions

2304 pixels x 1728 pixels

Original file size

498.45 KB