From 2009 to 2017, the famous swallows did not return to San Juan Capistrano. They instead began migrating to and nesting in the Chino Hills of Southern California, north of San Juan Capistrano. They built their mud nests in the eaves of the Vellano Country Club, situated around a golf course in the Chino Hills just north of the Chino Hills State Park. Mission San Juan Capistrano officials stated that the swallows changed their route because the mission is no longer the tallest building in the area due to urban sprawl, and thus stopped attracting the swallows for nesting.