Noisy Miner
Manorina melanocephala

The Noisy Miner is a medium-sized honeyeater (24-29 cm), closely related to the Yellow-throated Miner. As the name suggests, they do make a fair bit of noise, especially when they are mobbing larger birds, which they do often as they can be highly aggressive. These are one of the most common honeyeaters in the south-east of Australia and thrive in disturbed habitat, such as urban and suburban areas, much to the detriemnt of other less aggressive birds. The last is of a juvenile bird, which is evident from the short beak and downy feathers.
 

1: Monash University, Victoria, 27/04/2012.
2: Royal Botanical Gardens, Sydney, NSW, 13/09/2009.
3: Camperdown Campus, University of Sydney, NSW, 05/10/2009.