I have heard that crows have a connection with Peter, but it might just be that there are lots of crows in your area. I have seen crows constantly since I moved to where I live now since there are just a lot of crows in the area. The large bird could just have happened to be there, but it might have been a sign. Hard to say.
Crows aren't usually a sign of Peter, but they are the messengers of fairies. It's possible te have lots of fate in your area. Sometimes crows just like to listen. I often talk to them in my head o out loud telling them to send my greetings to the fae :)
