Townsend's Storm-Petrel

Oceanodroma socorroensis

ML253144921



eBird Checklist S72057906
Gary's Boat 32.75208, -117.29236
San Diego, California, United States
Search this location, Illustrated Checklist
Latitude and Longitude 32.7521, -117.2924 Map

Age
Unknown
Sex
Unknown
Behaviors
Breeding
Tags

Media notes

Observation details

Smaller black and white storm-petrel, extensive bold white rump wrapping a little under the sides, the white rump about same length as remaining dark tail. Tail shallowly forked, not so long as nominate leucorhoa or form chapmani Leach's Storm-Petrel making the bird short ended looking a bit in the rear. Plumage looked fresh, dark colored, gleaming white rump, could not detect any signs of molt. Shorter legs, not visible extending beyond tail. Distinctive behavior observed as the bird was feeding, flying across water surface suddenly towered vertically in air about 10 feet or more, flipped around at top when stalled, and dropped like a shuttlecock to the water surface to settle or patter on feet while investigating food item. It repeated this feeding behavior flight pattern over and over again. Also seen flying in the distinctive wide circles with tail end a bit drooped down as this species seems to like to do.

Technical Information

Model
NIKON D500
Lens model
500.0 mm f/5.6
f-stop
f/6.3
Focal length
500 mm
Shutter speed
1/4000 sec
ISO
3200
Flash
Flash did not fire
Original file size
217KB
Dimensions
1444 x 1064

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