Corralled chickens & Cows disappearing

After breeding a large group of chickens and cows within separate fenced corrals, I am finding that when beginning a session in the realm the flock/herd will have been reduced from 8-12 down to one or two. This does not happen every time I start a new session, but eventually, I will find almost all of the chickens and cows missing from the coral, even though the coral was secure and filled with many cows & chickens before ending a session. There are two other players using the real, and both confirmed that they are not removing the animals by either killing or releasing them.