The dark, smudgy streaks on Xavi Bou's photographs suggest the jerky ink tracks created by a malfunctioning printer, but they actually record the various patterns birds trace while flying in flocks.

Baby flamingos are fluffy and adorably awkward. But they’re not pink. The fuzzy infants start off as white or gray, only later earning a distinctive rosy hue. That’s because these beautifully dorky ...