France Heat Wave’s Impact on Poultry Farms

In June 2026, France experienced an unprecedented heat wave that severely affected poultry farms, resulting in the death of millions of chickens. The vulnerability of these birds to high temperatures was illustrated when temperatures in the chicken sheds climbed rapidly on June 23, leading to the deaths of 1,500 chickens at Isabelle Renaudier’s farm in Laubrières, France. These birds were nearing their scheduled slaughter date when the heat proved fatal.

Chickens are particularly susceptible to extreme heat due to their inability to sweat and their feather-covered bodies. As temperatures rise, chickens start panting as a survival mechanism, but this can lead to dehydration and energy loss. While slow-growing chickens raised outdoors face risks, those developed by the large-scale poultry industry experience additional challenges. These broiler chickens are bred to grow rapidly, reaching full size in five weeks. Their quick metabolism generates excessive heat, making them ill-suited for the increasing temperatures brought on by climate change.

Sylvia Goisbault, another farmer in northwestern France, is reevaluating her farming practices due to the heat wave’s impact. She plans to adjust the timing to avoid having birds ready for slaughter during the hotter summer months. This precaution reflects the growing concern among farmers about the feasibility of current poultry farming practices in a warming world.