Opossum research in the Orongorongo valley, Wellington

[First paragraph...]
A population of approximately 200 opossums (Trichosurus vulpecula) in 60 acres of indigenous forest in the Orongorongo Valley, Wellington, has been intensively live-trapped since February 1966. Frequent recapture of ear-marked animals has provided information on movements, population size, sex ratio, colour phases, physical characteristics, reproduction and growth and development of young.