The competition is organized by the Swedish Society for Nature Conservation (Naturskyddsföreningen) and aims to highlight birds' housing shortage while awakening nature interest in children and young people. In this national competition, school classes across Sweden build birdhouses that are actually useful, as today's large-scale forestry leaves many birds with nowhere to live. According to Göteborgs stad (official), the students were motivated by an appreciation for the paintings in the Moomin books.
This year, 977 birdhouses were submitted to the Birdhouse Championship, with 15 finalists presented yesterday advancing to the final round. The winners are determined by the public through a digital vote on the Swedish Society for Nature Conservation's website. Participants are divided into three age categories: preschool class–grade 3, grades 4–6, and grade 7–high school, with a winning class selected within each category. All winners will be presented on April 21.