A recently completed scientific study has concluded the main source of water pollution near the Pismo Pier is caused by hundreds of pigeons that roost on the wooden structure.The pigeon flock at the popular pier is estimated to be at least 400 birds, with more than 200 nests under the structure.
Two Bugs on Feral Pigeons Which Cause Illness in Humans
By Nicky Broyd WebMD Health NewsReviewed by Dr Rob Hicks 22nd June 2010 - A sampling of pigeons captured on the streets of Madrid has revealed the bacteria they carry. Researchers writing in BioMed Central’s open access journal Acta Vetinaria Scandinavica found two bugs that were highly prevalent in the bird population and which cause illness in humans: Chlamydia psittaci and Campylobacter jejuni.