Geocaching is a global outdoor activity where people go to specific sites around the world searching for small treasures. Avicaching is eBird + Geocaching: searching out specific locations to locate as many birds as possible. With Avicaching, the birds are the treasures.
Catching a glimpse of the endangered Kirtland’s Warbler is a lifelong dream for many birders. Relatively few have had the opportunity to see these large, charismatic warblers due to their extremely limited breeding range, unique habitat requirements, and small population size.