zooboy28

Wild Australian Raven, Taronga Zoo

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Wild Australian Raven, Taronga Zoo, 2009.

Wild bird visiting the zoo, sat conveniently on a branch across the path, by the Tree Kangaroos.
 
An Australian raven measures 46–53 cm (18–21 in) in length with a 100 cm (40 in) wingspan and weighs around 650, white a mature common raven ranges between 56 and 78 cm (22 to 30 inches) in length, with a wingspan of 100 to 150 cm (40 to 59 in). Recorded weights range from 0.69 to 2 kg (1.5 to 4.4 lb)

So the Common raven is much larger.
 
An Australian raven measures 46–53 cm (18–21 in) in length with a 100 cm (40 in) wingspan and weighs around 650, white a mature common raven ranges between 56 and 78 cm (22 to 30 inches) in length, with a wingspan of 100 to 150 cm (40 to 59 in). Recorded weights range from 0.69 to 2 kg (1.5 to 4.4 lb)

So the Common raven is much larger.

Thanks. Compared to some other birds over here (noisy minahs, Indian mynahs, rainbow lorikeets) for example, the Aussie ravens are twice or even three times their size
 
If I'm not mistaken, corvids (crows, ravens. blackbirds, jays) are the largest passerines, as well as the most intelligent.
 

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