I say bring in some hawks and eagles. Worked like a charm is NYC with the pigeon population.
We now have a lot of hawks here in Los Angeles.
In fact, one suddenly glided and landed very quietly on our flag pole this Saturday.
I waved my arms once (karate like wax on, wax off), and he flew away.
I think he might have been viewing me for dinner.
Our hawks are usually the red tailed hawks.
Oh, Glendale City poisoned their pigeons, and Los Angeles has made it a misdemeanor to feed those birds, but some yia-yias still feed them.