Why Do Flamingos Dance? Group Courtship Displays Explained

What a flamingo dance looks like

Flamingo displays are made up of a set of stereotyped movements that ornithologists have named and described. All six flamingo species use similar movements, though the details vary. The most common are:

• Head-flagging: birds stretch their necks straight up and turn their heads sharply from side to side, often while calling.
• Wing salute: a bird suddenly opens its wings to show the bright red feathers and black flight feathers, then folds them again.
• Marching: a tight group of birds walks quickly together in one direction, then abruptly turns and marches the other way.
• Twist-preen: a bird twists its neck and touches its bill to the feathers on its back, as if preening.
• Wing-leg stretch: a bird stretches one wing and the leg on the same side out behind it.

In a large colony, one bird starts flagging, its neighbors join in, and soon a wave of displays spreads through the flock. The marching groups grow and shrink as birds join and leave, and to a human observer the whole performance looks like a carefully rehearsed dance.

Why flamingos dance

To find a partner

Group displays are a kind of shared courtship. As birds march and flag, they move close to others and can judge potential mates. Studies of greater flamingos in the Camargue in France found that the number and variety of display movements a bird performs increases with age up to about 20 years and then declines, and that birds with more complex displays were more likely to breed. Greater flamingos usually take a new partner each year, so this yearly courtship really matters.

To breed in step

The displays also bring the whole colony into breeding condition at the same time. Displaying together appears to stimulate the birds to come into breeding condition together, so they tend to lay their eggs within a short period. That synchrony is valuable: chicks of the same age can gather in large crèches, guarded by a few adults, and predators such as gulls are swamped by the number of chicks at once.

Why bigger flocks breed better

Flamingos need company to breed. In a classic 1991 study of zoo flamingos, the researcher E. F. Stevens found that larger flocks performed more group displays and were more likely to breed than small ones. The same pattern shows up in the wild, where the biggest colonies hold thousands of pairs.

This is why zoos rarely keep just a few flamingos. Small groups may display a little but often never nest. Keeping larger flocks gives the birds the social stimulation they need.

Why some zoos use mirrors

Since flamingos seem to judge how many others are around them, some zoos have tried placing large mirrors beside their flocks to make the group look bigger. A 1992 study of a zoo flock of lesser flamingos found that adding mirrors increased marching displays.

Whether mirrors actually lead to more chicks is less clear, and results from different zoos have been mixed. Increasing the real size of the flock is generally considered the more reliable option.

Flamingo friendships and social life

Flamingo flocks are not simply crowds of strangers. Research on zoo flocks in Britain has shown that flamingos form lasting preferences for particular companions, including same-sex friendships, and spend time near the same birds year after year. Such social bonds may influence who displays together and who eventually pairs up.

Outside the breeding season, flamingos still live in flocks for safety and feeding. Thousands of eyes watching for predators make it hard for an eagle or jackal to approach unseen. For more on how they feed together, see what do flamingos eat?

Is it really dancing?

People call it dancing because the movements are rhythmic, repeated and done in unison, but flamingos are not responding to music or performing for fun. Each movement is a signal with a function, shaped by evolution because birds that display well, in a flock that displays together, raise more chicks.

The bright wing colors that make the wing salute so striking come from pigments in the birds’ food. Healthy, well-fed birds are pinker, so a vivid display may honestly advertise a bird’s condition, a link explained in why are flamingos pink?. The deep-pink American flamingo of the Caribbean performs the same displays as its paler Old World relative.