I haven't rally followed this thread closely but wonder if we are looking at
the right variables here, eg is it simply the dog or human or their
behaviour, or the noise of their toys, the colour of their clothing etc? I
saw nearly 100 species on a walk I used to regularly do in Brisbane and the
diversity and bird behaviour at any period never seemed to change whether I
was with my dog or not. Obviously there are places such as roost or breeding
sites where it would seem obvious that minimal disturbance would be
advisable (but also taking account of the fact that the presence of
"natural" predators is probably important for ecological balance - unless of
course that balance has been thrown way out of kilter by human interference)
but we need to very careful about extrapolating from such findings.
Regards Rex
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