1) Living fossil 
The sapayoa or broad-billed sapayoa (Sapayoa aenigma) is a suboscine passerine found in lowland rainforests in Panama and northwest South America. As the epithet aenigma (`the enigma`) implies, its relationships have long been elusive. It is easy to overlook, but appears to be common in a wide range and is not considered threatened by the IUCN. .....