Forster's Tern - Herky Birder
Report

Contributor

Date

Location

Prairie du Sac Dam
Sauk, Wisconsin, United States
Media from this location Illustrated Checklist
Map
Map Coordinates: 43.3086152, -89.7286838
Age
Not specified
Sex
Not specified

Observation details

Isolated black mask. Some dark wash into head/cap. Looked much lighter overall in flight lacking darker wingtips and carpals.

Technical information

Model
Canon EOS R50
Lens
RF100-400mm F5.6-8 IS USM + EXTENDER RF1.4x
ISO
1000
Focal length
560 mm
Flash
Flash did not fire
f-stop
f/11.0
Shutter speed
1/1000 sec
Dimensions
253 pixels x 306 pixels
Original file size
35.98 KB