A local cat has taken to hanging out in and around our garden which is not a problem. The only thing is that it yowls a lot and it's very loud. It quite likes sitting by our front door and yowling and is not bothered what time of day or night it does this. It's been doing this for 4 days now. As I've never had a cat I was hoping that someone here could shed some light on this behaviour. Is it normal? Or is something wrong? I've tried to approach it but it is nervy and won't come near me.