Reducing disturbances to sensitive seabirds and wildlife off the California coast is the mission of the Seabird Protection Network. Founded in 2005 and spearheaded by Greater Farallones National Marine Sanctuary, the network comprises multiple partners and works throughout the national marine sanctuaries located on California’s coast. Aircraft can disturb seabirds and jeopardize the long-term health of an entire breeding colony, so the network has built partnerships to encourage local pilots to keep above 1,000 feet elevation when flying over the California coast.
https://sanctuaries.noaa.gov/news/may17/seabird-protection-network-finds-allies-in-the-sky.html