Science

Chilean researchers test copper-infused vests to speed wound healing in injured Humboldt penguins

Veterinarians adapt fabric technology previously used on pets to protect penguins from self-inflicted wound damage and support population recovery.

Updated Sep 3, 2026 · 01:18 UTC1 reports

The short version

Researchers and wildlife veterinarians in Chile are testing fitted vests woven with copper and zinc microfibers to treat injured Humboldt penguins.
The garments discourage penguins from pecking at their stitches while the antibacterial and tissue-regenerating properties of the metals aid skin recovery.
The trial addresses rising injuries and stranding amid severe population declines caused by El Niño, fishing gear entanglements, and marine pollution.

Researchers from the Buin Zoo and the nonprofit Conservación Humboldt developed red bodysuits threaded with copper and zinc to accelerate wound healing in Humboldt penguins.[ABC News]
Copper and zinc embedded in the fabric reduce bacterial and fungal growth, while zinc assists in the formation of new blood vessels.[ABC News]
The garments restrict penguins from turning their necks to peck at open wounds or remove surgical stitches.[ABC News]
Surveys of major Chilean breeding colonies conducted in 2024 and 2025 documented a 63% decline in active nests compared to three years prior.[ABC News]
Humboldt penguin populations are under pressure from El Niño warming events, food shortages, plastic pollution, and fishing net entanglements.[ABC News]

The long-term efficacy and survival rates for penguins rehabilitated with the vests before release back into the wild remain to be established.[ABC News]