Gang-Gang Cockatoo. A small owl-like grey cockatoo with a forward-curving, filamentary crest. Quite and inconspicuous, usually arboreal, if disturbed it swoops low and up into the next tree. Flight is distinctly owl-like, with a large head, short square tail and moderately long broad wings. With a distinctive rising creaking growl, like a rusty hinge it lives in forests and woodlands of most sorts. They feed on seeds, especially those of Eucalyptus and Acacia, berries, nuts, fruits and insects.