I believe these are newly fledged blue-faced honeyeaters. I had heard them calling from this copse for a number of days. When I went to a nearby tree to search for the source of the calling, I heard a protective call - similar to a noisy minor, from a tree across the road and another tree close by. Turns out these were the parents, keeping an eye on their young. Keeping a careful distance, I found the young ones were on a bough, flitting around under the canopy, before flying to nearby trees with their parents.