Date of this Version
Presented at 2011 Bird Strike North America Conference, September 12-15, 2011, Niagara Falls, Ontario, Canada.
- 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.
- 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.