This is a common pigeon. Common because it's almost identical to every other pigeon.
You'll sometimes see a white one. That's because it's just had a bath. I made that last bit up.
If you would like to learn more VERY REAL facts like this about some of Australia's most common backyard birds, this is the book for you. I mean, who doesn't want to know what bok, bok, bok means in chicken? Or how often a budgerigar poops?
A handy first field guide packed full of fascinating facts (some of them are even true) about Australia's most common backyard birds.