That can involve walking a thin line, Rotramel says, especially when chemicals are involved. The most complete way of excluding the birds is netting. However, in most cases, that's the most expensive. Ron Johnson, professor and extension wildlife specialist at the University of Nebraska, agrees that economics play a part. Birds might be nesting or roosting in one place, but they might be feeding in another area.
Pigeons are stubborn.
All they care about is a roof over their heads and food and water. The longer the birds have lived there, the more attached they become. They were raised there. Their parents were raised there. Big buildings and interior jobs often pose unique problems when developing a management solution.