Every year in June/July the Lilly-pillies (Syzygium smithii) are producing round fruits in shades of white and pink.
They are attracting many birds, especially large numbers of Satin Bowerbirds, which are joined by Spotted Catbirds, the odd juvenile Golden Bowerbird and some Tooth-billed Bowerbirds.
This year there was a small group of Tooth-billeds, at least 6 birds!

female Satin Bowerbird, spoiled for choice

juvenile Tooth-billed Bowerbird
We watched them biting off pieces of leaves as well, with their notched beaks.

Spotted Catbird

King Parrots and Crimson Rosellas are chewing the fruits to get at the seeds.

There is no such thing as a flock of Tooth-bills to the best of my knowledge – an aggregation in a fruiting tree perhaps but not a flock, which is something entirely different.
Cliff
Kind regards and best wishes)
That was meant in jest 🙂 . I should have put ‘flock’ into inverted commas.