Data Talks

Many birds have four colour-sensing cone cell types in their eyes (unlike our three and most mammals' two), giving them vision into the UV range, and (presumably) a much richer experience of colour. Birds that appear dull brown to us likely appear resplendent to other birds https://t.co/WMb37H9VFG pic.twitter.com/ismiQGEMrz

— Bryan Hoyt (@bryhoyt) July 27, 2025