Southern Resident killer whales face critical welfare challenges from inadequate chinook salmon prey availability, with food stress causing poor body condition, reproductive failure, and population decline.
SRKW food stress represents a welfare tragedy unfolding in slow motion - a small, well-studied population of intelligent, socially complex animals facing chronic nutritional deficiency from prey collapse. Individual orcas experiencing nutritional stress show visible physical changes, behavioral alterations, and reproductive failure. The population's cultural transmission of knowledge, social bonds spanning decades, and complex communication systems mean that population decline causes welfare harm to surviving individuals who lose social partners. The conservation and welfare solutions are identical: salmon recovery through dam removal, habitat restoration, and fishing management. SRKW welfare is a direct indicator of Pacific Northwest ecosystem health.