It is not at all surprising to have birds (and mammals) entering towns. They are getting to realize that Homo sapiens does not seem to be going away, but is taking more of their territory. That being the case, they have come to the point where they decide they must share the habitat with Homo or perish. Here in the states we have Coyotes (about like a Jackal) moving back even into fair sized cities. Given a few years a reasonable sized suburban yard can yield a bird list of nearly 200 species including migrants, of course.
Nenda salama, Jerry