Pigeons
Aside from the eyesore caused by pigeon droppings, there is the potential
health hazard associated with pigeons.
From an article in the Tucson Citizen edited because of the 600 w04d limit.
''Pigeons are vectors of diseases and they are hosts to vectors of diseases,''
Brandstatt said. ''Humans can get diseases directly from a pigeon or the
organisms that attach to them such as fleas.''
One of the bacteria that can attach to the birds is salmonella, according to
the Arizona Department of Health Services.
Pigeons can also carry other microbes that can cause histoplasmosis and
psittacosis, which show up as pneumonia-like conditions.
There is the potential of humans contracting those ailments if they inhale
dry droppings that have turned to dust and are pumped into air-conditioning
systems, health officials say.
''Pigeons can carry a great many things,'' said Michael Fink, epidemiology
specialist at the state health department.
There are countless options but exclusion through the use of netting is a
good long-term solution, Brandstatt said.
In some cases, spikes are also installed in what would typically be pigeon
nesting and eating areas.
One technique that has stirred up some controversy is Avitrol baiting, which
can cost $230 for a 5-pound box.
If there is a feeding site on a roof, for example, the bait works by soaking
corn or grains pigeons eat in the chemical.
''The pigeons that eat the Avitrol have basically a bad acid trip. They emit
warning cries. When they give warnings to the flock, the flock leaves,''
Brandstatt said.
Most pigeons will opt to go to an alternative, often higher, site and
typically don't return, he said.
''It's a chemical that produces hallucinations,'' Brandstatt said. ''It's not
designed to kill pigeons.''
Harold Harlan, staff entomologist for the National Pest Control Association,
a private nonprofit trade industry group, said the chemical is not intended
to kill.
''Just like with any chemical, it's all dose-related. There is an occasional
fatality if they get enough of a dose,'' he said. ''Discomfort would have to
be fairly common or it wouldn't work.''
Dave Roth, founder and president of the Urban Wildlife Society, said he
isn't against keeping pigeons away from properties.
He suggests ''habitat modification,'' which means blocking off access to
potential shelter areas and sources of food. Many times, pigeons will simply
leave to find another source of food.