Researchers have discovered an extraordinary, vibrantly colored tropical bird with "female" feathers down one side of its body and "male" feathers down the other.
Female green honeycreepers (Chlorophanes spiza) typically have grassy green feathers, while the males are a brilliant blue. However, this individual was green on the left and blue on the right. Amateur birder and lead study author John Murillo first spotted the two-toned honeycreeper at his farm near Villamaría in Colombia in 2021; the bird was last spotted in June 2023 and its current status is unknown.
