The Noisy Miner Manorina melanocephala is a predominantly grey nectar-feeding bird indigenous to Australia. That’s one in the photo above. The Indian Myna (Acridotheres tristis) — also known as the Indian Mynah or Common Myna — is an introduced species and is a chocolate-brown bird with a black head. This page is meant only to help you see the differences in their appearance, but I have more information about the Noisy Miner here and the Indian Myna here.
They’re about the same size. Both birds are known for their aggression — the Noisy Miner can be extremely territorial over an area with nectar-producing plants and the Indian Myna can attack other birds to get the best nesting holes.
From this point on I’ll show the differences and let the pictures say the rest.