I need an help about Australian birds

["Simon J Blanchflower" <>]

Menotti,
Don't know whether you've solved your ID problem yet but it looks like a
first winter Larus delawarensis RING-BILLED GULL. I've seen this species a
number of times on the south west coast of England + in the US - Your photos
would seem to indicate that this would be a good candidate and certainly
more likely than a Kelp Gull?

Simon.