It showed up all by itself at the feeding table, and grumpily snapped at the sulphur-crested cockatoos when they tried to get some of the seed. The newcomer is significantly smaller than a sulphur-crested, with a much less impressive crest, but it's bigger - and apparently more bad-tempered - than a galah.
The newcomer was very successful at keeping the usually-boisterous mob of bigger birds away for a few minutes, while it filled up on the mound of sunflower seeds. (I am, as regular readers know, engaged in an ongoing experiment to determine whether wild cockatoos can become obese.) Then it flew away.
It took me a few tries to identify this bird [and then, as I've mentioned, I got it wrong...], because I couldn't find anything resembling it in Birds in Backyards' excellent Bird Finder. The Finder usually leads you quite easily to the right Australian bird - it's my first stop whenever I see a new feathered beastie here in Katoomba. But it didn't work this time.
I thought that meant this wasn't an Australian bird; if it actually had been a Blue-eyed Cockatoo, it would have been a slightly endangered native of the Bismarck Archipelago of New Guinea. That's about 3100 kilometres (1926 miles, 558 leagues, 15,410 furlongs) from this house. As the crow, or cockatoo, flies.
So I figured this one was probably an escaped pet. But since it's actually a Little Corella - the bags under the eyes are quite distinctive, if the crest isn't up - the only odd thing is that I've never seen one at the feeder before. I don't know why I didn't find this bird's page on Birds In Backyards. Perhaps someone forgot to tick the "blue" box in the "colours" part of that database entry, or perhaps I insisted it was finch-shaped, or something.