Complex sentence: The call is considered the most reliable means of identification in areas where its range overlaps with other corvids, and is a deep and husky "korr-korr-korr-korr" with a similarly drawn out last note to the Australian raven.
Split into simpler sentences: The call is considered the most reliable means of identification in areas where its range overlaps with other corvids. It is a deep and husky "korr-korr-korr-korr" with a similarly drawn out last note to the Australian raven.