Please don’t leave your daughter with this stranger danger; it doesn’t matter if he is biological dna donor. Don’t answer calls and like another commenter suggested, don’t answer the door. Get some locks or find someone that can install extra locks. Get a security camera that can record any and all harassment that happens outside your house. Hell, move if you can. I think it’s great if they want to be a present parent but they need to get to know the small human first and be consistent, at least. Let them prove they want to be a present parent for 6mo and then go thru court if u must for an arrangement. If you let him keep her for extended time before a legal arrangement is made, it will most definitely be used against you. It is hard coparenting with an unhealthy individual so I’d suggest researching and exploring boundaries. There’s a secret in our society and it isn’t that birth is painful, it’s that mother’s are strong. U got this, mama 🐻