From one image it is impossible to separate Australian from Little Raven, especially as the Little is the commonest raven in the SH. The proof lies in either seeing beyond doubt the gular pouch in the Australian or the settling posture of the Little.
Thanks. Makes me think more Little than Australian. This problem of separating the ravens is very difficult and most Atlas lists allow for "Raven species" and I have noted that designation has been used by very experienced birders in the past. Perhaps we should use it too unless the species is obvious.
Also some additional information for IDing ravens.
1. Listen for the call. This is one of the key distinguishing features. (high pitched and short in Little, long and deeper in Australian). You could take a sound recording if you want to.
2. Little Ravens often flick their wings when perched. (Australian doesn't do this).
3. Throat hackles. (Very prevalent in Australian, not prevalent or less noticeable in Little.)
4. Groups. Little is often in medium sized groups of 5 or more birds. (Australian is rarely in groups of more than about 3 or 4)
You can note any of these features in your notes or in the comments. Regards, Luke.