As you can see, toucans are born with a dull color and a much smaller beak that grows along with their physical development until they reach that bright, vibrant color that the adults have.
Below, is video-timeline of the chicks’ development from the day of their birth through their first day outside. You may notice the third egg in the clip dated June 17. It’s possible that the egg was cracked or not fertile which is a common natural occurence.
Big shout out to bird keeper, Sarah, for capturing and sharing photos and videos throughout their stages of development!