Atlantic puffins face welfare challenges from food scarcity, plastic ingestion, and burrow competition at breeding colonies.
Puffins show clear welfare costs when food is scarce: adults lose body condition and chick starvation increases. Longer foraging trips elevate exhaustion risk. Plastic ingestion reduces digestive efficiency and can cause injury or death. Bycatch in fishing nets kills thousands annually. Rats at colonies destroy eggs and chicks.