Complex sentence: The Black Bittern, "Ixobrychus flavicollis", is a bittern of Old World origin, breeding in tropical Asia from India and Sri Lanka east to China, Indonesia and Australia.
Split into simpler sentences: The Black Bittern, "Ixobrychus flavicollis", is a bittern. It is of Old World origins, breeding in tropical Asia from India and Sri Lanka east to China, Indonesia and Australia.