This sounds promising though I am sure there will be lots of tantrums and maybe some setbacks along the way.This is something to be dealt with once the legal stuff is sorted out. The geese belong to C. I don't think anyone will object to them being there but some conditions would need to be met.
The chickens will belong to the group but I will be responsible for their care. I'm good with that. If they want to give me the chickens, then I'm good with that to.
Poor geese.