B95 (born c. 1992), nicknamed Moonbird, is a red knot celebrated for its longevity as the oldest known member of its species. The bird, a male of the Calidris canutus rufa subspecies of the red knot (a species of shorebird in the sandpiper family), was banded in Río Grande, Tierra del Fuego, Argentina in February 1995 by Patricia González, an Argentine biologist. It has been resighted many times since then, most recently during May 2014 by González in the Canadian Arctic. It also has been recaptured at least three times—the last time in 2007 (aged approximately 14) when it was found to be "as fit as a three-year-old". It is not known how long red knots typically live.