Cacatua tenuirostris - Long-billed Corella

Most characteristic is a is an unusual long and narrow beak; the beak has a pale grey color. The overall plumage is white. The crest is also white and much shorter than the other Corella’s. It has a red patch on the lores (between the beak and eyes) that extends around the eyes. It has a wide red patch on the throat that look similar to a “cut throat”. The feathers on the chest has a pink tint. The underside of the wings and tale is yellow. The naked eye-ring is bluish.

Size: about  38-41 cm.
Weight: about 567 gram.

Long-billed Corella look similar to the other corellas and are often confused, but the size of the bill and crest and also the red coloration on lores and breast distinguish these species:

• Long-billed Corella (Cacatua tenuirostris) has the largest bill; the head is also larger but the crest is much shorter than the other two species. The red area on the lores continue over the eye. The red patch on the throat is wider and look like a “cut throat”.
• Western Corella (Cacatua pastinator) has a large bill but smaller than Long-billed Corella. The crest is much longer than the Long-billed Corella. The red area on the lores is just a small patch between the eye and bill. The red patch on the throat is much smaller than on Long-billed Corella and may be barely visible on some birds.
• Little Corella (Cacatua sanguinea) The bill is much smaller and the upper and lower mandibles are of similar length. The crest is slightly shorter than Western Corella but larger than the Long-billed Corella. The red coloration of throat is missing. The red area on the lores is smaller and a paler red color.