Description and biology of this bird, which is native to Europe, North Africa, and southwestern Asia, but is now found worldwide.

Sound recordings of this bird.

Illustration, photo, possible reasons for this bird's decline, and facts about recovery efforts.

International research project that uses community involvement to compile pigeon mating data. Includes project information, pigeon facts, news and past results, and how to join.

Features research information compiled by Dr. Daniel Haag-Wackernagel about wildlife management, behavior, biomonitoring, and deterring systems. [Some information in German only.]