Life History. Fishers breed from February to March and exhibit a reproductive strategy called “delayed implantation.” The adult female breeds within days after giving birth, but the fertilized eggs remain dormant in her uterus for the next 10 –11 months.

Do fishers mate for life?

Fishers live a solitary lifestyle except during the breeding season. They breed between February and March, but due to a reproductive process called “delayed implantation” they do not deliver their young until 10 to 11 months after mating occurs.

Why do fisher cats scream?

About that scream

Another unusual characteristic of fisher cats is their piercing screams. Internet forums say a fisher's blood curdling screams, let out in the dead of night, signal that the creature is about to attack.