Those little colourful guys are not as common as Crimson rosellas, yet are fairly easy to see, I think I've seen a couple of them at least every other day. They are easier to spook than the crimsons though and don't seem to hang out in big groups.
Eastern rosellas (Platycercus eximius) seem to prefer open spaces and grasslands, and I've seen them mainly foraging on the ground.
Those photos don't show them off though, so I've been trying to catch them when they are perched on branches. Aren't they beautiful?