The Galahs and Corellas have also noticed it, but they seem to prefer the front verandah, which suits us, as we like to see the Rosellas and King Parrots, and they won't come down if the bigger cockatoos are on the feeder. The Rainbow Lorikeets alternate between the back yard and front yard!
Here are the Eastern Rosellas - lots of photos because I just couldn't stop at one picture of these beautiful birds. The bird house had fallen from the tree one day, so we parked it on top of the compost bin, but the Rosellas didn't seem to mind!