I think it is great that you now know you have a different partner to help you out with the strays and ferals. I certianlly would give him a call and you two need to get together and decide who does what and how to handle the mama's and kittens. Maybe all he wants to do is help and is working without knowing what he is doing. I would call him as soon as I could and get your heads together and make a plan.. I am of no help with the situation with the mama's and babies he has taken but I would be excited that he is trying to help!!! (He may think he is working alone too!)