If it is the Noisy Miner Manorina melancephala then it is a honey eater. Dispite the honey eater tag it feeds mainly on insects but also nectar and some fruits (apparently including banana).
Now here comes the hard part. They have small nest and the young fledge early (at 16 days), in fact they can barely fly. At this (very dangerous) stage of life the animal is call a branchling and is still looked after the colony. On the Gold Coast the colonies were only about a dozen but winter colonies here in Adelaide can number over 100 birds. The branchling stage only lasts a few days.
When you picked up the bird did other birds come flying up to the area and start complaining loudly, (real loud, they ain't called noisy miners for nothing). They would have sat in branchs about 3 meters of the ground and told you off. They may have even dive bombed you, but the dive bombing is strictly non-contact. If that is what happened then the best thing you can do is try and re-introduce it, first thing in the morning preferbly 1/2 hour after first light. Take it back and place it back where you found it. Then back up about 10 meters and watch. On sighting other members of the colony it should start making a near constant "mip,mip" sound. You'll reconize the sound if you have Noisy Miners in the area. The sound should induce the adults to feed it. If you see it feed then the you can let the colony take over.
