Cliff Swallow

Cliff Swallow flying overhead.
Cliff Swallow, Commons Park, Denver, CO, April 26, 2025
Canon EOS R5 with Canon 100-500 mm L-series lens with 1.4x teleconverter; 700 mm; ISO-400; f/10; 1/1000 sec.

This page is for the Cliff Swallow (Petrochelidon pyrrhonota). My first photographic evidence occurred on May 5, 2012 at Caprock Canyon State Park, Quitaque, TX. My wife were driving home from a hiking trip at Palo Duro Canyon State Park and we stopped here to see the American Bison (Bison bison) herd that roams the park. We had the added treat of seeing the Cliff Swallows.

Cliff Swallow under the eves of a building in an apparent nesting area.
Cliff Swallow, Caprock Canyon State Park, Quitaque, TX; May 6, 2012
Sony DSC-H3; 63 mm; ISO-400; f/4.4; 1/125 sec.
Cliff Swallow coming into a land at one of eight nests under a highway overpass.
Cliff Swallow, Calaveras Lake, San Antonio, TX, May 11, 2023
Canon EOS R5 with Canon 100-500 mm L-series lens with 1.4x Teleconverter; 700 mm; ISO-250; f/11; 1/800 sec. -0.7 exposure bias
Cliff Swallow peeking out of a nest.
Cliff Swallow, Commons Park, Denver, CO, April 26, 2025
Canon EOS R5 with Canon 100-500 mm L-series lens with 1.4x teleconverter; 700 mm; ISO-6400; f/10; 1/1000 sec.
Cliff Swallow flying out of a nest.
Cliff Swallow, Commons Park, Denver, CO, April 26, 2025
Canon EOS R5 with Canon 100-500 mm L-series lens with 1.4x teleconverter; 700 mm; ISO-6400; f/10; 1/1000 sec.