Wilson's Storm-Petrel - Justyn Stahl
Report

Contributor

Date

Location

Ensenada pelagic 3 of 10
Ensenada, Baja California, Mexico
Media from this location Illustrated Checklist
Map
Map Coordinates: 31.655013, -116.839899
Age
Not specified
Sex
Not specified

Observation details

In a few large flocks of Black Storm-Petrels feeding near the tuna pens (31.624, -116.831) we estimated 10 Wilson's Storm-Petrels were present. First a single bird, then joined by a second at 0853, four all together (see group photo) in a single view at 0859, and by 0919 we were able to get 8-9 in one sweep. Given that there were 2-3 large assemblages of Black Storm-Petrels, we felt 10 was a safe estimate of the true number of Wilson's present. All showed various signs of molt in primaries or secondaries. The storm-petrels showed extensive white on the rump, wrapping around into the under tail and lower belly, with characteristic feet extension visible beyond tail. A high count for Mexico it seems, with just 6 prior eBird records of single individuals.

Technical information

Model
Canon EOS 7D
Lens
EF300mm f/4L IS USM
ISO
200
Focal length
300 mm
Flash
Flash did not fire
f-stop
f/5.6
Shutter speed
1/2000 sec
Dimensions
2004 pixels x 1333 pixels
Original file size
1.5 MB