Flamingos are pink or red. This is because of small bacteria that live in water which the flamingos eat. They also eat small crayfish and algae. Baby flamingos are gray. Flamingos are very tall birds and they have long legs. They often stand on only one leg. Scientists do not know why flamingos do this. Flamingos have a curved bill that is shaped like a banana. This is because they feed in the mud on the bottom of lakes. Flamingos can weigh up to 4 kg and be up to 145cm tall. They live up to around 47 years