One picture is perhaps worth 1000 squawks. That picture is figure 3 (captioned “Schematic diagram showing an acid-base imbalance in poultry under heat stress”) in this study:
“Impact of Heat Stress on Poultry Health and Performances, and Potential Mitigation Strategies,” Sanjeev Wasti, Nirvay Sah and Birendra Mishra, Animals, vol. 10, 2020, no. 1266. (Thanks to Berry Pinshow for bringing this to our attention.) The authors, at the University of Hawaii at Manoa, explain:
High environmental temperature alters the poultry health and performances by causing heat stress. Heat stress elicits physiological, behavioral, and production changes in poultry. This review article summarizes these changes along with the strategies that have been used in the poultry industry to ameliorate the adverse effects of heat stress in poultry.