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Common hill myna

life science Maturity 5-7 Next article →

The common hill myna, known scientifically as Gracula religiosa, is a prominent species of starling.

Common Hill-Myna
Common Hill-Myna

These birds are primarily found in the hilly regions of South and Southeast Asia. They are widely recognized for their remarkable ability to mimic sounds. This skill makes them very popular in aviculture, which is the practice of keeping birds. Because they can imitate the human voice and even whistled tunes, they are highly valued. This unique vocal ability is a defining characteristic of the species.

Physically, the common hill myna is a stocky, jet-black bird. Its plumage often displays a green gloss or a purple tinge on the head and neck.

Gracula religiosa MHNT 227 Jardin des plantes de Paris
Gracula religiosa MHNT 227 Jardin des plantes de Paris

One of its most striking features is the large, white wing patches. These patches are very obvious when the bird is in flight but remain mostly covered while sitting. The bird measures approximately 29 cm in length. This makes it somewhat larger than the common myna, a related species. Its legs and bill are a bright, contrasting yellow.

The bird also features distinctive fleshy patches of naked skin called wattles.

Gracula religiosa robusta-02
Gracula religiosa robusta-02

These yellow wattles are located on the side of the head and the nape, which is the back of the neck. In the common hill myna, these wattles extend from the eye to the nape, where they join together. This pattern is different from other hill mynas. For example, the Sri Lanka hill myna has a single wattle across the nape. In the southern hill myna, the wattles are separate and curve toward the top of the head. These subtle physical differences help scientists distinguish between various groups.

Scientific study of this species dates back to 1758. The Swedish naturalist Carl Linnaeus formally described the bird in the tenth edition of his work, Systema Naturae. He assigned it the binomial name Gracula religiosa. The genus name comes from the Latin word 'graculus,' which refers to an unknown bird. The specific epithet, 'religiosa,' means 'sacred' in Latin. This name may refer to the historical practice of teaching these birds to repeat sacred prayers. The type location for this description was the Indonesian island of Java.

Taxonomists currently recognize nine distinct subspecies of the common hill myna. These include the G. r. intermedia, which ranges from northern India to southern China.

Common Hill-Myna
Common Hill-Myna

Other subspecies inhabit specific islands, such as G. r. palawanensis in the Philippines. One subspecies, G. r. miotera, is of great concern. A 2020 study suggested it may have been driven to extinction in the wild during the late 2010s. This decline was likely caused by unsustainable collecting for the wildlife trade. Scientists recommend rescuing the remaining captive individuals for captive breeding programs.

The vocal behavior of the common hill myna is highly complex. They are most active and vocal at dawn and dusk.

In the wild, they produce a wide range of sounds, including whistles, wails, screeches, and gurgles. Each individual has a repertoire of three to 13 different call types. These calls are learned when the birds are young. Interestingly, these sounds function like dialects. Birds living more than 15 km apart may have no call types in common. While they are famous mimics in captivity, they do not actually imitate other birds in the wild.

In their natural habitat, these birds are almost entirely arboreal. This means they spend most of their time living in trees. They usually move in noisy groups of about six individuals within the forest canopy. They are omnivorous, meaning they eat a variety of foods including fruit, nectar, and insects. They build their nests in tree holes, usually laying a clutch of two or three eggs.

This lifestyle keeps them closely connected to the forest ecosystem.

Conservation is a major concern for many hill myna populations. During the 1990s, nearly 20,000 wild-caught birds were entered into the pet trade annually. This high demand has caused declines in certain areas, such as Thailand. To protect them, the species was placed on CITES Appendix II in 1997. This is an international agreement to control the trade of certain species. In the Garo Hills, locals help by building artificial nests from split bamboo. These nests protect the birds from habitat destruction and help manage local populations.

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🖼️ Images & Media (5)
File:Common Hill-Myna.jpg
Common Hill-Myna.jpg
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File:Common Hill Myna (Gracula religiosa) foreplay at Jayanti, Duars, West Bengal W Picture 369.jpg
Common Hill Myna (Gracula religiosa)...
File:Gracula religiosa robusta-02.JPG
Gracula religiosa robusta-02.JPG
File:Gracula religiosa MHNT 227 Jardin des plantes de Paris.jpg
Gracula religiosa MHNT 227 Jardin des...
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