Q: Are pigeons ever put off feeding on a field by any dressing on the grain or pea seeds?

A: In the olden days, before the advent of Health and Safety legislation, a lot of seed dressings were mercury based, and pigeons would not touch it until rain had washed it off.

These dressings have been banned for some time now, so modern versions are clearly not so toxic to birds, as they are quite happy to pick the scattered grain straight from the drill. Furthermore the meat of birds eating such grain isn’t tainted so it’s safe to eat.