Aussie ornithologist required
You're right about the Swallows, i think they're "Welcome Swallows". they have, the shiny dark blue feathers, light grey breast and usually a little darker "rusty red" face these might be juvenile ones since they look a bit lighter in colour. the shape of the tail feathers are the giveaway.
Swifts are more common here and look similar albeit a bit smaller and are always flying around. I've never seen a Swift perched like that.
Hope you or whoever you're visiting in hospital has a speedy recovery.
or ..if you're in the maternity section.. congratulations !