Gray down tells truth. At the edge of a saline lagoon, a hatchling's pale coat records not a failed pink but an unstocked pigment account: flamingos enter life without the dietary carotenoids that will later stain growing feathers, bare skin, and bills.Pink is food made visible. Flamingos graze on algae and sift tiny crustaceans, especially brine shrimp, from shallow water. Microalgae sit at the f...More