Purple Martin - Max Benningfield
Report

Contributor

Date

Location

Presidio--Battery Godfrey
San Francisco, California, United States
Media from this location Illustrated Checklist
Map
Map Coordinates: 37.8037613, -122.4774715
Age
Not specified
Sex
Not specified

Observation details

Running tally. Photos. Massive swallows with forked tails. Mainly imm/fem types

Technical information

Model
Canon EOS 7D Mark II
Lens
EF100-400mm f/4.5-5.6L IS II USM
ISO
800
Focal length
400 mm
Flash
Flash did not fire
f-stop
f/5.6
Shutter speed
1/8000 sec
Dimensions
1396 pixels x 931 pixels
Original file size
187.02 KB