Seabird chick welfare depends critically on parental feeding success, which is increasingly compromised by reduced fish availability in warming seas.
Seabird chick starvation is a welfare harm affecting thousands of individuals in poor fish availability years. Hungry chicks are unable to regulate body temperature effectively, are more vulnerable to predation, and die slowly from starvation. Protecting forage fish stocks including sand eels from commercial fishing and climate change that alters their distribution are the priority welfare interventions for North Sea seabird populations.