Following up David's comments below I think Crested Pigeons will have no
effect on Spotted Turtle-doves. Around my place in Como (southern Sydney)
Turtle-doves and Crested Pigeons coexist quite happily, with both visiting
my very urban garden (with the latter more common). Turtle-doves seem to be
more common in the remnant (usually weedy) gullies, with Crested Pigs more
often on open areas like ovals and lawns.
Cheers,
Peter
We are fortunate in that we don't have Spotted Doves in Dubbo but, from my
time in coastal NSW where Crested Pigeons have colonised they do not seem
to compete directly with Spotted Doves. Crested Pigeons don't appear to
become a real urban bird like Spotted Doves although HANZAB does comment
that they are common in urban areas. This may still be real differences
between Crested Pigeon (favouring parklands for example) and Spotted Dove
or it could reflect the fact that I've never really lived in a real urban
area. In more rural areas where the two species do occur they may occur
together at a localised food resource such as a chook pen or dairy but I
don't feel they really compete for resources away from these areas.
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