Pigeon Droppings Contaminate the Air Ducts of this Building

Here we see the buildup of bird poop inside the duct work. This is pigeon waste, droppings from the pigeons that entered the
vent work via an open vent on the roof of the building. They lived inside the ducts, and left their droppings everywhere. In this
case, it was a public building, and it posed a serious risk to the inhabitants inside. Pigeons swim with disease and parasites,
and pigeon poop is a biohazard. This duct pictured was just one such contaminated duct.

Here we see another photo. Not only were the vents polluted with the waste of the birds, but with nesting material, eggs, and
even dead birds. I found many dead birds inside these ducts. It's a good idea to have the birds removed, and to have the entry
points on the roof permanently sealed. After the birds are all gone and kept out for good, the biohazard waste that they leave
behind should be fully cleaned, decontaminated, and disinfected.