Flamingos eat with their heads upside down to enable them to use their tongue as a sieve to catch food. The Flamingos suck in water with their tongue and it exists out the side. Its oddly shaped bill filters dirt and other inedible objects from food with the help of hairy projections called mandibles. Their diet typically consists of small organisms such as brine shrimp and algae, but this may vary depending on the size and shape of the bill.