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
Large-billed Crow
Corvus macrorhynchos
The large-billed crow is relatively large all-black corvid. It is 46–59 cm (18–23 in) in length and 450–1,000 g (16–35 oz) in weight. It has a large black bill with an arched culmen. The base of the culmen is hidden by a layer of overlapping black rictal bristles. The glossy black plumage has a purple sheen. The bases of the neck feathers are pale grey. The throat has elongated hackle feathers. The irises are dark brown and the legs are black. The sexes are similar in plumage but the female, on average, is smaller than the male and has a less arched culmen. Voice: The voice is similar to the house crow to which it is closest, but deeper and usually more resonant and described as the usual loud "caa-haa-caa". However, it makes a range of calls, some which could be described as "cau cau" and others that could be mistaken for a woodpecker drumming.
ID text from Wikipedia, CC BY-SA 4.0
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