Question of the week:
Why do woodpeckers frequently drum on a metal roof, drainpipe or TV antenna support?
A. Most birds sing to proclaim territories and warn other males to keep away. Since many woodpeckers have relatively poor voices they drum instead of sing to proclaim ownership of their nesting area. Ordinarily they select a hollow tree to obtain the maximum volume. Some individuals have discovered that they get the most volume from a metal roof, drainpipe, or antenna support and consequently use these objects as their favorite drumming posts.