Chowchillas odd behaviour

I had an odd thing happen Aug 30 at Lake Barrine- we walked towards where some Chowchillas were calling and suddenly 3 appeared flying quite high overhead and darting through some branches in a large tree maybe 15-20 m up; they may have doubled back round as they began calling again not too long after, or perhaps an intruding group got chased off. I have never seen this bird fly high at all, they are always on or very near the ground and only fly short distances, so I was quite taken aback! I suspect it was an intruding group that got seen off, as two lots were calling initially.

Regards