**7. Conclusion**

Heat stress is one of the challenges faced by the poultry industry in the tropics and the world at large. In the recent years, global temperatures have been rising due to global warming. There are negative effects of heat stress that reduce the production and quality of poultry products. In addition, it impedes on the gains made in poultry welfare. Much information has been published concerning heat stress; nevertheless, there is need for more research on its effect and mitigation measures on free range chicken in the tropics.
