Arbor Day in Samoa is observed every first Friday of November as part of an ecological campaign aimed at fighting deforestation and conserving the country's rainforest. Samoa, located in the Samoan tropical moist forests ecoregion, has experienced significant loss of its lowland rainforests, with approximately 80% lost since human habitation began. The forests provide habitat for numerous endemic species, including the threatened tooth-billed pigeon and the Samoan woodhen. In 1994, Samoa ratified the Convention on Biological Diversity to develop strategies for conservation and sustainable use of its biodiversity, with conservation projects often organized in collaboration with matai, the family chiefs who govern most of the land. Arbor Day serves to highlight the importance of protecting these vital ecosystems and promoting the conservation of biological diversity in the region.