In article , Jane Ransom
writes
In article , Malcolm
writes
Studies have shown that the
numbers of pigeons taken by sparrowhawks and other predators is a very
small percentage of overall losses.

Well, if a flock of about 30 white doves, in a couple of years is a
small percentage of the overall losses . . . . . . the sparrowhawk will
decimate the small bird population without any help from slug pellets
and hygienic farming practices ((((((((((

Hardly. Small birds will have far better innate predator avoidance
skills than white doves, as well as being much less conspicuous, not to
mention much less attractive as a meal!

--
Malcolm