Yellow Billed Loon

Observations: Little is known about the longevity of these relatively rare animals, but they have been reported to live up to 10.1 years in the wild (http://www.pwrc.usgs.gov/BBL/homepage/longvrec.htm). Considering the longevity of similar species, however, maximum longevity could be significantly underestimated. They reach maturity in their third year but probably do not reproduce until a year later (http://bna.birds.cornell.edu/).