The Mystery of the Rio de Janeiro Antwren (Myrmotherula fluminensis)
Caio Brito / 12 Jan 2026
Rio de Janeiro Antwren
Caio Brito of Brazil Birding Experts explores the story of one of South America's most puzzling lost birds.
Welcome to the Search for Lost Birds
Around the world, 121 species of birds have not been documented in the last decade. Can you help find them?
Latest News
Catch up on the latest news and stories about Lost Birds from around the world
FOUND: Broad-billed Fairywren Documented in Indonesia After 11 Years
Nina Foster / 29 Dec 2025
Broad-billed Fairywren
With “the world’s worst picture,” Daniel Hoops captured evidence of the little-known lost bird in West Papua.
FOUND: How One of the Most Unexpected Lost Birds Was Photographed
John C. Mittermeier / 18 Dec 2025
Biak Myzomela
Biak Myzomela was one of the only lost birds with recent sightings but no photographs. Why?
About the Search for Lost Birds
We strive to understand and promote species of birds that are currently ‘lost’, meaning that at least 10 years have passed since they were last confirmed by photographs, sound recordings, or physical documentation. The Search for Lost Birds is a global partnership between American Bird Conservancy, Re:wild, and BirdLife International.
With Support From
