the.com/robin egg
A blue so iconic Tiffany trademarked the color and called it a flex.
Why bluePigment biliverdin filters sun, shielding embryos like sunscreen
Color decoyBrighter blue signals a healthier, fitter mother bird
Clutch sizeUsually three to five eggs per nest
Quick exitChicks hatch in under two weeks
Tiffany lockThat blue is a legally protected trademark color