Woodpeckers can cause property damage by drilling holes in wood siding and eaves. The birds especially like to hammer on wooden shingles, cedar or redwood siding, metal or plastic gutters, television antennas and light posts because these materials produce loud, hollow sounds. Drumming is most common during early morning and late afternoon, and usually ends by July 1. The northern flicker is the most common member of the woodpecker family in Colorado. It is identified in-flight by a yellow or salmon tint under the wings and tail feathers.
Northern flickers have black spots on a tannish-white breast and belly.
Males have a black or red mustache extending from the base of the beak to below the eyes. Control Methods Trying to drive woodpeckers away involves using visual repellents and loud noises. Attempting to scare them off requires immediate action because woodpeckers are persistent once a territory or pecking site is established. Prompt repair of holes may encourage the woodpecker to leave, or discourage other woodpeckers, as these holes may serve as visual attractants. Cover holes with aluminum flashing, tin can tops or metal sheathing and paint them to match the siding.