In the areas I trap, a full colony averages 10 beaver.The adult pair,4 2 year olds and 4 yearlings.Now this varies on age of adults,trapping pressure and nature. I had one female that had 10 pups a year.Missed her the first year but not the mate and 20 of her youngsters.The next year took her ,her new mate and the 10 young she had that year--she weighed 85 pounds the fall I caught her.
The areas I am trapping now are devoid of 2 year olds--catching lots of very large adults (most in the 60 pound and better range)and young of the year--but 2 year olds are not there.Trying to figure out what happend almost 2 years ago,that caused either the deaths of these beaver or them not being born.I should make mention ,that trapping did not take place in these areas,my partner and I are the only ones able to be in these spots.
Just one of the things that will always keep us guessing.
Tom