I've got a random memory of a science fiction film from either the late 80s or early 90s. It's a fairly sketch memory but a few key points stick out:
1) Aliens (that look human) travel to earth to stop an human / alien hybrid child
2) They get to earth by teleporting to a roof of a sky scraper (not much in the way of effects, just some smoke and lights!)
3) Parts are more mystical than sci-fi it feels like
4) The hybrid child has telekinetic powers
5) The final battle takes place on the sky scraper and (this is the really clear part I remember) a metal bird statue that is being levitated has a large spike shoot out of it and the statue then is flown into the main bad guy impaling him.
I'm not sure if this was a movie or something made for TV but it look fairly cheap!