Muskrats have a need to find new area to live and travel looking for it. So, enough muskrats came in to fill the void of the empty pond. Isn t nature wonderful. This is just an example of how nature fills a void. Fox travel great distances and you can trap out all the fox on a farm and next springs new ones will move in.
Nature fills a void.
But, beaver are one animal you can over trap. I try to take only two beaver per den. I did this on one pond for 5 years and there is still beaver there today. The other part of nature is if the fox or coyote populations are down then the mothers tend to have more pups each year and if the numbers are high they tend to have less pups. Nature checks and balances are wonderful.