The Christmas Bird Count is an annual event where volunteers across North America count and record the number of birds they see in a specific area. This event typically takes place from mid-December to early January and helps scientists track bird populations and migration patterns. Organized by the National Audubon Society, the count has been conducted since 1900. Participants can join local groups or count birds in their own backyards, contributing valuable data to conservation efforts. The information gathered helps researchers understand changes in bird populations and the health of ecosystems.