The Mariana Crow, or Aga, originally occurred on the island of Guam and the neighboring island of Rota in the Mariana Island chain of western tropical Pacific Ocean. The Aga has become locally extinct from Guam in recent decades, along with most native forest birds there, due to the incidental introduction of the Brown Tree Snake (Boiga irregularis) after World War II. The Aga now exists only on the island of Rota. Despite the absence of the Brown Tree snake on Rota, this population has been in decline for the past 30 years. Going from an estimated 1300-1400 individuals in the 1980's to 150-200 individuals currently, the Aga is now considered critically endangered.

The University of Washington has been involved with the Mariana Crow research and recovery efforts since 2005. We work in collaboration with the US Fish and Wildlife Service, Commonwealth of the Northern Mariana Islands Department of Fish and Wildlife, San Diego Zoo and Institute for Wildlife Studies to understand and protect this species from extinction. Join us in learning more about these unique, intelligent and imperiled birds and the beautiful island of Rota!