Common Tern

Cornell’s All About Birds

With Killder
Triadelphia Reservoir
September 5, 2008
Photo by Bill Hill

With Caspian Tern
Triadelphia Reservoir
September 5, 2008
Photo by Bill Hill

Greenbridge
May 24, 2026
Photo by Vitus Li

While not necessary for common species, it is good to get into the habit of including photographs and recordings/spectrographs so that you do it for uncommon species that require more documentation.