The Galah (Eolophus roseicapilla), also known as the Rose-breasted Cockatoo is a commonly found Australian cockatoo that has a rose-pink head, neck and underparts, with paler pink crown, and grey back, wings and undertail.
Like most cockatoos it is a rather loud and sociable bird. In fact in Australia, galah is a derogatory term that means a loud-mouthed idiot or fool. Like most cockatoos too, it roost in tree cavities and gather as a group in the evenings and early mornings. The sexes can be differentiated easily by their irises colour. The males has dark brown irises, while the female have pink irises.
I managed to find a group of them while on vacation in Queensland in September 2012, and took some pictures and made some observations.