
Canon EOS 5DS R with Tamron 150-600 mm lens; 150 mm; ISO-125; f/5; 1/1000 sec.
This page is for the Bonaparte’s Gull (Chroicocephalus philadelphia). My first photographic evidence of the Bonaparte’s Gull was on December 24, 2021 at the Forth Worth Nature Preserve, Fort Worth, TX. The best photograph I have taken of the Bonaparte’s Gull to date (above) was on January 2, 2022 at the Fort Worth Nature Preserve, Fort Worth, TX. I was able to isolate the image of this gull from among hundreds of birds (American White Pelicans, Double-crested Cormorants, Ring-billed gulls, and Bonapart’s Gulls were the ones I could identify) that appeared to be chasing a school of fish.
The following photograph is the best representative image from a different date and location than my species representative example.

Canon EOS 5DS R with Tamron 150-600 mm lens; 600 mm; ISO-640; f/7.1; 1/3200 sec.

Canon EOS R5 with Canon 100-500 mm L-series lens with 1.4x Teleconverter; 700 mm; ISO-320; f/10; 1/1250 sec.

Canon EOS R5 with Canon 100-500 mm L-series lens with 2.0x Teleconverter; 1000 mm; ISO-800; f/14; 1/1000 sec.