<P> The Australian raven ( Corvus coronoides ) is a passerine bird in the genus Corvus native to much of southern and northeastern Australia . Measuring 46 -- 53 centimetres ( 18 -- 21 in ) in length , it has all - black plumage , beak and mouth , as well as strong grey - black legs and feet . The upperparts are glossy , with a purple , blue or green sheen , and its black feathers have grey bases . The Australian raven is distinguished from the Australian crow species by its throat hackles , which are prominent in adult birds . Older adult individuals have white irises , younger adults have a white irises with an inner blue rim , while younger birds have dark brown irises until fifteen months of age , and hazel irises with an inner blue rim around each pupil until age two years and ten months . Nicholas Aylward Vigors and Thomas Horsfield described the Australian raven in 1827 , its species name highlighting its similarity with the carrion crow ( C. corone ) . Two subspecies are recognised , which differ slightly in calls and are quite divergent genetically . </P>
<P> The Australian raven ( Corvus coronoides ) is a passerine bird in the genus Corvus native to much of southern and northeastern Australia . Measuring 46 -- 53 centimetres ( 18 -- 21 in ) in length , it has all - black plumage , beak and mouth , as well as strong grey - black legs and feet . The upperparts are glossy , with a purple , blue or green sheen , and its black feathers have grey bases . The Australian raven is distinguished from the Australian crow species by its throat hackles , which are prominent in adult birds . Older adult individuals have white irises , younger adults have a white irises with an inner blue rim , while younger birds have dark brown irises until fifteen months of age , and hazel irises with an inner blue rim around each pupil until age two years and ten months . Nicholas Aylward Vigors and Thomas Horsfield described the Australian raven in 1827 , its species name highlighting its similarity with the carrion crow ( C. corone ) . Two subspecies are recognised , which differ slightly in calls and are quite divergent genetically . </P>
what is the difference between a raven and a crow in australia
what is the difference between a raven and a crow in australia
throat hackles
throat hackles