Putting six-inch nails on rooftops
is bad enough, but some pest control
companies are advising business associations
to use Avitrol
control. They claim that it's only a disorienting
agent, not a poison
, but there is documentation of swarms of pigeons going into convulsions
it and of Avitrol killing pigeons by first inducing seizures
and then cardiac arrest
. There does not appear to be much being done to prevent its use
Also recommended are changing the angle of sills, installing mesh guards and nylon netting to prevent birds from landing, or removing their nests in the hope of relocating them. But surviving pigeons often fall victim to other wildlife such as hawks.
Not so long ago, people would look up at the sky and laugh over birds shitting on their heads. I think we should go back to that.