On Galápagos, Revealing the Blue-Footed Booby’s True Colors (Published 2017)
Blue-footed Boobies by nytimes: Biparental care is the rule among boobies, but longtime mates have perfected the art of symmetry and turn-taking. They spend the same time brooding and feeding the young, and expend the same physical effort as seen in measures of blood cells and body mass. #Birds #Parenting