Is there a predator of pigeons that won't scare away the little birds?
A Wind-chime can be hung and scare pidgeons away. Or even an aluminum foil plate if you do not want to buy a wind-chime . Other suggestions, hang several balloons, put out a decoy, owl or hawk. A possibly scatter rubber snakes.
I always just hang up a lot of old CD's around the yard. When they turn and the sun catches them, birds don't like this and stay away. They don't like any reflective surface at all.
I have a problem with pigeons in my garden. Can some one give me some advice on how to get rid of them?