strange Chough behaviour

["calyptorhynchus ." <>]

This morning I was running along the path between Red Hill and Deakin when I saw a flock of 40 Coughs flying at tree-top height from Red Hill towards Deakin and calling. "Oh," I thought, "they must roost on Red Hill, then fly to suburbs to feed during the day."

However, within a few seconds of them passing out of sight over Deakin they reappeared, still at tree-top height, but flying back towards Red Hill. So rather than moving from the Hill to the suburb they seem to have been doing a sort of fly-over of Deakin and returning to the Hill. 

Has anyone come across references to Choughs flying high and surveying territory beneath?

--

John Leonard