Interesting mass germination of Silver Wattle (Acacia dealbata) recently. The ground in some parts is covered in a carpet with literally thousands of them.
Before they can sprout Wattles usually need a fire to melt their waxy seed coat. No recent fires on these sites though so my theory is Cockatoos and Rosellas are doing the seed treatment by dropping partially chewed seeds from the trees while feeding. (I am open to other suggestions)
Lyrebirds are pretty active at the site and no doubt will scratch the vast majority of the new seedlings out of existence.