Birds at maroubra junction nsw

The car park area between Boyce and gale roads is very busy most days. The swallow type birds are active, larger birds, not sure what they are are, have been growing less prevalent in the past weeks.
However there has been a proliferation of black crows, very noisy at dusk. Especially over the past month in particular.

This morning there has been a prolonged avian warfare with white cockatoos seeking dominance of the territory, circling the east
side around the tall buildings and in the car park trees. They are very noisy. The flock would number about fifty or more birds. They don’t appear to have the sulphur crest and I think they are smaller.

Is the destruction of the trees at centennial park area changing the nesting habits of the bird population?

I am not a “birder” able to identify all the species, but enjoy the birds that inhabit the “wilds” of Anzac Parade.