7 Fascinating Facts About Flamingos

Flamingos are birds belonging to the Phoenicopteridae family, readily identified by their long legs, elongated necks and adult plumage, which may range across several shades of pink. Six species are currently recognised, occurring mainly in parts of Africa, Asia, Europe and the Americas. They generally inhabit wetlands, including shallow lagoons, coastal habitats and saline or alkaline lakes.

Here are some fascinating facts about flamingos.

1. Their pink colour comes from their diet

Despite what their appearance may imply, flamingos are not born with pink feathers. Chicks have pale or greyish plumage, with their distinctive colouring developing gradually as they mature. This is caused by carotenoids, natural pigments found in the foods eaten by these birds, including algae and small crustaceans. Once consumed, these compounds are processed by the body and help colour the feathers.

2. They eat with their heads upside down

Flamingos have an eye-catching feeding method because of the unusual position they use while eating. To locate food, the bird puts its head into the water with its bill almost upside down, moving it from side to side. Its tongue helps pump water in and out, while comb-like structures in the bill trap food. This enables the animal to filter algae, seeds, larvae, crustaceans and other small organisms from the water and mud.

3. Standing on one leg takes little effort

One of the most familiar images of flamingos is a bird resting while balanced on a single leg. Although this stance may look uncomfortable, the animals' anatomy and joint mechanics mean it can require very little muscular effort. As a result, the bird can hold the position for a long period without using as much energy. This adaptation is so effective that flamingos can even sleep while standing this way.

4. What looks like a knee is actually an ankle

Flamingo legs also have an anatomical surprise. The highly visible joint halfway down the leg, which many people assume is the knee, is actually the bird's ankle. Its knees are positioned higher up, close to the body, and are concealed beneath the feathers. This is because much of what we see as the animal's leg consists of elongated structures in the feet and lower limbs. In practical terms, a flamingo spends most of its time supported on the tips of its toes.

5. Flamingos can fly long distances

Although they are often seen walking or standing in water, flamingos are capable of flying. In flight, they stretch their necks forwards and hold their long legs extended behind them, creating a very distinctive outline. Some populations travel in search of suitable feeding or breeding sites, or more favourable weather conditions. On longer journeys, these movements may take place at night.

6. Parents produce a type of “milk”

During the earliest stages of life, chicks are not yet able to use their bills to filter food as adults do. They are therefore fed a nutritious secretion known as “crop milk”, which is produced in the upper digestive tract. Both males and females can produce this substance, which is rich in nutrients important to the young birds' development. The fluid may have a reddish colour because it contains pigments linked to flamingos' colouring. As the chick grows and its bill takes on the right shape, it gradually begins feeding independently.

7. Chicks gather in large “nurseries”

After leaving the nest, young flamingos commonly assemble in groups known as crèches, which resemble large bird “nurseries”. These gatherings can include many chicks and be watched over by a few adults while the parents leave or move around the colony. Even among so many birds, parents and chicks can recognise one another through distinctive calls.