Starling

Starlings are a diverse family of passerine birds belonging to the family Sturnidae.

These birds are recognized by their glossy, iridescent plumage and highly complex vocalizations. They are also famous for a dramatic social behavior called murmuration. In a murmuration, thousands of birds fly in massive, synchronized, and seemingly random swarms. This collective movement helps protect the birds from predators like falcons. By moving as one large, pulsing unit, the flock can confuse a hunter.

Many starlings use a specialized feeding technique called open-bill probing. This process is also known as zirkeln, a term from the German word for a pair of compasses. To use this method, a starling inserts its bill into a narrow crevice or hole. Once the bill is inside, the bird forcefully opens it wide. This action expands the opening and exposes prey, such as grubs, hiding within.

Most species are omnivores that eat insects and fruit. Some even consume nectar or fermenting fruit. Starlings possess specific enzymes that allow them to break down alcohol very quickly.

The Sturnidae family is quite large and varied. It contains 128 different species divided into 36 genera.

For example, the Nias hill myna is the largest species, reaching lengths of 41 cm. In contrast, Kenrick's starling is the shortest-bodied species at only 15 cm. The white-necked myna is the longest, measuring up to 47 cm. Much of its length comes from its very long tail. Some species, like the Asian mynas, are much larger than others. Other species, like the African glossy starlings, are known for their bright, shimmering colors.

Iridescence is a common feature among many starling species. This shimmering effect is not caused by pigments in the feathers. Instead, it is a structural color. This means the color comes from the physical structure of the feathers themselves. In some birds, like the Bali myna, light scatters off parallel collagen fibers to create color.

Other birds may have crests or elongated tail feathers for decoration. The irises of many species are also quite striking, often appearing red or yellow. Younger birds usually have much darker irises than adults.

Starlings are incredibly talented mimics. They have a repertoire of about 15 to 20 distinct imitations. They can copy many different bird species and even non-avian sounds. This includes human speech patterns and even car alarms.

Scientists study these vocalizations because starlings can recognize specific individuals by their calls. This ability has made them a subject of research regarding the evolution of human language. They tend to imitate sounds that are simple in frequency or very common in their environment. This can even lead to local dialects of mimicked sounds.

The history of starling distribution includes many human-driven changes. While they are native to Europe, Asia, and Africa, they have spread globally.

The European starling was introduced to North America between the 1870s and 1890s. This was done by acclimatization societies to introduce European wildlife to the continent. A popular story says Eugene Schieffelin released them to match Shakespeare's birds. However, records show they were already in the U.S. by the mid-1870s. In many new habitats, they are considered invasive because they compete with native birds.

Understanding how murmurations work has required advanced science. In the late 1800s, Edmund Selous studied them and suggested "thought-transference." However, modern research tells a different story. In 2013, physicists and engineers from Princeton and Italy used computer simulations. They found that no single bird leads the flock. Instead, each bird synchronizes with its seven closest neighbors.

This creates a rapid wave of information across the group. Researchers found that the flock often forms a "pancake" shape for optimal performance. This shape allows information to move through the flock with almost no loss, much like a high-quality signal.

Starlings play important roles in many ecosystems. As they eat fruit, they become vital seed dispersers. In Asia and Africa, they help spread seeds for trees like the Indian banyan.

Some species also act as pollinators. The slender-billed starling, for instance, pollinates giant lobelias in East Africa. They inhabit almost every environment except very dry sandy deserts. From the Arctic Circle to the Equator, starlings have adapted to many different ways of life. They remain one of the most successful and social bird families on Earth.