Pelican populations have recovered in many regions but face ongoing welfare challenges from fishing gear, habitat disturbance, and pollution.
Pelicans contaminated by oil lose waterproofing causing hypothermia in aquatic birds that depend on insulation for thermal regulation. Fishing line entanglement causes amputations. Colonial breeding site disturbance causes massive chick mortality. Population recovery following DDT demonstrates that removing human-caused welfare harms enables population-level recovery.