Maybe you should try striking up a conversation. Perhaps the ones up where you are are a bit shy.
Magpies are notorius for chattering, in particular those cut-ups Heckle and Jeckle.
Actually, I think most corvids (crows, ravens, jackdaws, rooks, magpies, and jays) are mimics to some extent. I even saw one site that mentioned a Blue Jay that was able to talk, although it could say only one word.