Lisa Allen, wildlife biologist, Global Survey, attaches a serialized band on a Least Bell’s Vireo hatchling at the Santa Margarita river on Camp Pendleton, Calif. May 16, 2018. The Least Bells Vireo travels south during the winter months. Biologist use the golden bands to identify the survival rate of the returning birds the following year. ( Marine Corps photo by Lance Cpl. Drake Nickels)

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Keywords: base, bells, birds, conservation, corps, endangered, game, installations, marine, marines, mcb, mci, office, species, vireo, warden, wardens, west