Realizing the city's famous birds were no longer returning home, members of the Mission San Juan Capistrano enlisted the help of Dr. Charles R. Brown, a cliff swallows specialist from the University of Tulsa. In 2012, the first phase of a two-step process began, where the sounds and calls of the cliff swallows were played throughout the mission to lure the birds back home. In 2015, the project continued with the second phase where a replica wall of man-made colonies was built to give the birds a nest to return to. The nests were built to be very similar to the original nests made in the mission, prior to the early 1900s re-stabilization. As of summer of 2017, the cliff swallows have returned home to Mission San Juan Capistrano and are still celebrated each year at the town's annual Swallows Day Parade and Mercado Street Fair.