Beaver sterilization project, \u3ci\u3eCastor canadensis\u3c/i\u3e, in an urban setting

Presentation The problem; The Biology of Castor canadensis; Capture procedures; The benefits of sterilisation; The Montreal Airport Project; The Farnham Garrison Project; One beaver too many Why is the population growing The price of beaver pelts has dropped; The lack of natural predators in urban and semi-urban areas; A species that re-produces rapidly. Damage Chews trees, up to 100m from the pond; Blocks up culvers with dams; Floods roads, rail tracks and farm land; Creates a welcome habitat for water fowl and increases the risk of bird strikes Airports and beavers do not mix! Castor canadensis (General Information) Location: Almost all of Canada and the USA. Weight: adults from 11-35 kg. Life span: Approx 20 years in captivity and 10 years in the wild castoreum, a rarity, is an oil secreted by a gland, located near the rectum, used to mark its territory Food reserves are collected towards the end of summer to carry the colony through the winter