An estimated 90% of seabirds have ingested plastic debris, with welfare impacts including digestive blockage, false satiety, and toxic chemical accumulation affecting global seabird populations.
Seabirds that ingest plastic experience progressive welfare compromise from gut blockage, false satiety causing nutritional deficiency, and toxic chemical effects. Chicks fed plastic by parents experience slow starvation as their stomachs fill with indigestible material. The scale of seabird plastic ingestion makes this one of the largest ongoing wildlife welfare emergencies.