Little Raven
Corvus mellori

The ever-so-slightly-smaller cousin of the Australian Raven (48-50 cm for Little compared to 48-54 cm for Australian). These birds tend to be more sociable, forming large flocks at times. The main diagnostic differences are the shorter throat hackles (the shaggy feathers under the chin) and the call, which is a series of harsher notes instead of the wailing of the Australian Raven. The first two are adults and the last is a juvenile, which has a dark eye.
 

1-2: Clayton, Victoria, 20/03/2010.
3: Monash University, Victoria, 16/12/2010.