I foster cats and really enjoy doing it, so far I have only had one at a time. However I have had one so long he’s basically a resident cat now! Anyway I have 2 female kittens which are just coming to me before they get put up one for adoption one is super confident and the other is very scared bless her. The other cat I have is a neutered male around 2/3years old. I’ve had them for about 5 days now and the past two days he has been very vocal as the confident kitten is now meowing and running about so he can hear her. He’s not aggressive vocal like hissing/growling more trilling/chirping and he has for the last 2 days taken to sleeping outside the room they are in. I was wondering if anyone has had any experience with this…is he stressed? Curious? Wanting to protect the kittens? I can crate the kittens so he could be introduced but I thought with the potential short time they are here it wouldn’t be worth it. He’s a pretty quiet cat normally and I was hoping if he got on ok with this, then I would continue with multiple fosters. I also don’t want to stress him out so I could keep him downstairs more if he is in fact stressed. Just looking for advice from those with experience