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["alan morris" <>]

AustraliaAndrew,

The only corvid in eastern Sydney is an Australian Raven, birds with brown 
irises are immatures, so that your bird's gular pouch would not have 
developed. Little Ravens are occasional visitors in small flocks to the far 
west of the Sydney Region. Torresion Crows only extend as far south as 
Newcastle on the NSW coast at this stage but they are pushing south! Your 
copy of Simpson & Day is correct in the distribution maps for the  corvids 
around Sydney
Alan Morris
Records Officer,
Birding NSW