Australian Raven
Corvus coronoides
Measuring 46–53 cm (18–21 in) in length with a 100 cm (39 in) wingspan and weighing around the 650 g (1+7⁄16 lb), the Australian raven is Australia's largest species of corvid. The adult Australian raven is an all black-bird with a black beak, mouth and tongue and sturdy black or grey-black legs and feet. The tibia is fully feathered and the tarsus is long, and the feet large and strong. It has white irises. The plumage is glossy with a blue-purple to a blue-green sheen, greenish over the ear coverts, depending on the light. The underparts are not glossy. Voice: The territorial call of the Australian raven is a slow, high ah-ah-aaaah (similar to the near-open front unrounded vowel (IPA:/æ/)) with the last note drawn out. It uses this call to communicate with other Australian ravens in the area. When giving this call, the species has a horizontal posture, holding its head forward and body parallel to the ground, while perched on a prominent position.
ID text from Wikipedia, CC BY-SA 4.0
Little Raven
Corvus mellori
The little raven is, at about 48–50 cm in length on average, somewhat smaller than the Australian raven (though sizes do overlap between both species), the little raven's beak is slightly smaller. The little raven is a somewhat more sociable species than the Australian raven, often forming large flocks that roam freely over wide areas in search of food. Voice: Its call is a harsh, guttural "kar-kar-kar-karrr" or "ark-ark-ark-arrk" with a similarly drawn-out call to the Australian and forest raven. Like all species of raven in Australia (with the exception of the forest raven) the little raven sometimes stretches or flicks its wings outward slightly when calling.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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