Hi Jostein
Are you sure they have any resource to defend?
I thought they were entirely opportunistic...
No, I'm not sure!
I'm a biologist of invertebrates; I take photos of birds because
they are pretty and interesting.
I would need a bird person to tell me what the gull was carrying
on about! I have, however, seen gulls here hassling one another
when one has got something tasty that the others want.
Anyway, I just thought it was an interesting behaviour to try and
get a photograph of. (And I was experimenting with the 70-210
zoom on a doubler with the *ist DL, trying to see if I could get
decent photographs doing manual focus and exposure, handheld. I
got lucky.)
Thanks for the kind words.
Keith
