â¢ TURDUS MIGRATORIUS (noun). The noun TURDUS MIGRATORIUS has 1 sense: 1. large American thrush having a rust-red breast and abdomen. Familiarity information: TURDUS MIGRATORIUS used as a noun is very rare. TURDUS MIGRATORIUS (noun). The noun TURDUS MIGRATORIUS has 1 sense: 1. large American thrush having a rust-red breast and abdomen. Familiarity information: TURDUS MIGRATORIUS used as a noun is very rare.
He said: Jonathan is the sole survivor of three tortoises that arrived on St Helena Island in 1882. He was already mature when he arrived and was at least 50-years-old. Therefore his minimum age is 176-years-old. He is the oldest inhabitant on St Helena and is claimed to be the oldest living tortoise in the world. He lives in the grounds of Plantation House which is the governor's residence with five other tortoises who are much younger than him.
Eastern box turtles live thirty to forty years in the wild and have been alleged to reach ages of one hundred years or more in captivity. A box turtle grows very rapidly for the first four or five years of its life reaching sexual maturity in four years but full adult size only by age twenty. Some have stated that only fully grown box turtles, in spite of apparent earlier sexual maturity, are actually reproductively active.