The British Trust for Ornithology (BTO) is a UK-based charity dedicated to the study and conservation of birds. Founded in 1933, it focuses on collecting data about bird populations and their habitats to inform conservation efforts. The BTO engages volunteers in citizen science projects, allowing the public to contribute to bird monitoring and research. The organization collaborates with various partners, including government agencies and conservation groups, to promote evidence-based policies for bird conservation. Through its research, the BTO aims to enhance understanding of bird ecology and the impacts of environmental changes on avian species.