NAMPA, Idaho (AP) - An excess number of pigeons in downtown Nampa have been causing problems for the area's buildings and patrons.

Idaho Press-Tribune reports the urban renewal agency recently approved a plan to allow a city resident to live-trap the pigeons for free.

Randy Haverfield, chairman of the agency, says the birds' poop is the main concern.

Brian Foster, city facilities management superintendent, says the poop damages the rooftop's paint and exterior surfaces. He says the amount is also a health risk to employees performing maintenance on the roof.

Air is filtered into the city's library, but the massive amounts of poop on its roof could possibly contain hazardous bacteria.

About 30 pigeons currently occupy the library's roof. Foster says he has seen that number increase to 60 pigeons.