The pigmentation of the iris of parrots changes with age: they lighten as the bird matures.
The evolution of this pigmentation is not clearly defined. However, it seems that this phenomenon plays a role in the choice of potential partners. Probably by providing clues as to the maturity and experience of individuals …
Lisa Longo, March 17, 2021, Facebook post from the Animal Académie page, ” Did you know that…? “. Available online: https://www.facebook.com/permalink.php?story_fbid=4093501624040308&id=1126073194116514, accessed 03/22/21
– © Morgane Virapin – March 2021