GF,as far as I remember,Peregrines have blueish/grey backs and wings and are a bit smaller.
I have never seen Magpies here,I know in Sweden we call them Crows,I don't remember ever seeing black crows in Sweden.
Usually if the Crows are around,they'll try to scare the Hawks away,make a holy racket
probably defending their territory.
I love to study the behavior of different critters in my yard...