Abstract
The rock pigeon (Columba livia) reproduces successfully in breeding colonies at ambient temperatures (Ta) exceeding 50 C. Unusually low body temperatures (Tb) of 38.9 C (±0.6 SD) and 40.0 C (±0.5 SD) were measured during incubation at 45 and 50 C Ta. Egg temperature (Tegg) was regulated at 36.7 C (±0.8 SD), 39.0 C (±0.6 SD), and 40.7 C (±0.6 SD) at 28, 45, and 50 C Ta, respectively. The incubating birds (acclimated to high Ta's) use an effective cutaneous evaporative cooling mechanism in lieu of panting or gular flutter. Incubating birds achieved heat and water balance while exposed to extreme thermal stress by using an efficient cutaneous evaporation cooling mechanism, avoiding nonessential activity, and maintaining low metabolic rates.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
