Thick-billed murres are abundant Arctic seabirds facing welfare impacts from oil spills, plastic ingestion, and climate-driven changes to their prey base.
Oil-fouled murres experience rapid deterioration of the waterproofing and insulation provided by their plumage, leading to hypothermia in Arctic waters. Affected birds must preen constantly, consuming energy reserves, before drowning or dying of cold. Prey shortages caused by Arctic warming force parents to fly longer distances to provision chicks, leading to chick starvation when food cannot be delivered fast enough. Gillnet bycatch kills large numbers annually through drowning.