Do you and your team have interesting results to share Linking Avian Physiology to Welfare? Would you like to submit them to a Research Topic in Frontiers in Physiology, Section Avian Physiology? If both answers are "YES", follow the link: https://www.frontiersin.org/research-topics/41580/linking-avian-physiology-to-welfare#overview Short description: Avian physiology and avian welfare are unequivocally linked. One of the seminal definitions of animal welfare indicates it is the "state of an animal as regards its attempts to cope with its environment". Developed as a hybrid scientific discipline, animal welfare has inspired part of its bases in physiology. In this sense, birds' abilities to cope with their environment have underlying physiological limits, as well as dynamical transition states which must be revealed and understood. Various environmental factors are known to challenge avian homeostasis (or rather, homeodynamics). Consequently, a series of physiological components and/or systems are activated to process the stimuli and coordinate the proper response, which may often involve behavioral aspects as well. This would lead to increased energy expenditure and the potential occurrence of various trade-offs aimed at coping. The mentioned environmental factors, i.e. stressors, challenge the avian' much-needed internal balance and may cause their attempts to cope with their environment to fail, directly impairing avian welfare.