Seabird colonies are sensitive to human disturbance during breeding, with welfare impacts ranging from temporary stress to catastrophic colony abandonment.
Seabird welfare during breeding is acutely vulnerable to disturbance because colonial nesters have no option to relocate when disturbed. Panicking adults abandoning nests even briefly expose eggs and chicks to predation and temperature extremes. Persistent or repeated disturbance causes adults to abandon nests entirely even when chicks are present. The welfare harm from disturbance interacts with other stressors - colonies already under pressure from prey collapse or disease have less capacity to absorb disturbance events. Visitor management and exclusion zones during breeding season are essential welfare protections.