Colony Size, Age, and Sex Structure of Newfoundland Beaver

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Abstract
Response of beaver (C. canadensis) to baited Conibear 330 traps set under the ice near lodges in Newfoundland indicated kits were as vulnerable at 1-3 m from the lodge as they were from 6-9 m. There was no difference (P > 0.05) between the percentages of kits and adults or males and females trapped. Of 46 colonies, 15% were single, 24% were pair and 61% were family colonies. Colony size averaged 3.5 beahver for 26 colonies totally removed, of which 13 were family colonies averaging 5.3 beaver. There was no difference (P > 0.05) in the sex ratio. Of the family colonies, 42% contained 2.5-yr-old beaver and 24% contained 3 beaver 2.5 yr old or older. Of the pair colonies, 42% contained a yearling.

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