
Acridotheres javanicus, also known as the Javan myna, is a bird species native to Indonesia.
The Javan myna belongs to the starling family, Sturnidae, and is closely related to other myna species.
One of the most distinctive features of Acridotheres javanicus is its black plumage with a distinctive yellow or orange patch on its wing.
This bird species is relatively small, measuring about 25 centimeters in length.
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Taxonomy
The Javan myna's taxonomy can be a bit tricky. It's sometimes included in the great myna (Acridotheres grandis) or the jungle myna (A. fuscus).
The International Ornithologists' Union recommends not using the name "white-vented myna" to avoid confusion with the pale-bellied myna (A. cinereus).
Taxon identifiers for the Javan myna are Acridotheres javanicus.
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Physical Characteristics
The Javan Myna is a medium-sized bird, weighing about 100 grams and measuring 21-23 cm in body length.
Its main color is black, but it has some distinctive markings. The wings are brownish-black, and the primaries have white bases.
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You might notice a short crest on the forehead of this bird. Its beak, legs, and feet are a bright yellow.
The eyes of the Javan Myna are a lovely lemon-yellow color. The immature birds are actually browner than the adults.
This bird's undertail-coverts are white, and it has a striking white wing bar and tail bar when it's in flight.
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Habitat and Distribution
The Javan myna is found in a variety of habitats, including cities and cultivated areas. Its adaptable nature allows it to thrive in urban environments.
This bird species is native to Bali and Java, but has expanded its range to other regions. Southeastern Thailand, southern Malaysia, and Singapore are just a few examples of places where the Javan myna can be found.
In addition to these areas, the Javan myna has also been spotted in Sumatra, the Lesser Sundas, Taiwan, Puerto Rico, Japan, and Nepal. Its global distribution is quite impressive, considering it's originally from Indonesia.
Unfortunately, the Javan myna is considered endangered in its native areas, such as Java, due to excessive cage trapping. This has significantly dwindled its population.
The Javan myna can be found in a range of environments, from grasslands to villages and urban areas. Its ability to adapt to different habitats is likely a key factor in its success as an invasive species.
Behavior and Breeding
Javan mynas are bold birds that aren't very afraid of humans, which is why they're often kept in cages in Malaysia and Indonesia.
In their natural habitat, Javan mynas are usually found in pairs and associate in larger groups. They're social birds that thrive in the company of others.
Their nests are built in cavities, and the eggs laid by the Javan myna are a beautiful bluish-glaucous color.
Behaviour
Javan mynas are bold and not very afraid of humans. They're often kept in cages in Malaysia and Indonesia, which suggests they're quite comfortable around people.
Javan mynas are typically found in pairs and associate in larger groups. This social behavior is likely an adaptation to their scavenging lifestyle.
Their voice is similar to that of the common myna, which is a notable characteristic of this species. They use their vocalizations to communicate with each other.
Javan mynas scavenge in groups of 2 to 4, or more, with all except one feeding and one usually at a vantage point keeping a look out. This cooperative foraging behavior allows them to efficiently search for food.
If the bird that's keeping watch sees anything that might pose a threat, it alarms the group members with a high-pitch tweet and they all flee the area swiftly. This quick response to potential danger is crucial for their survival.
Breeding
The Javan myna's breeding habits are quite fascinating. Nests are constructed within cavities.
These birds are quite skilled at building their homes, and it's not uncommon to find them in tree cavities or rock crevices.
Eggs laid by the Javan myna are described as bluish-glaucous.
Sounds and Similar Species
The Acridotheres javanicus, also known as the Javan myna, is known for its distinctive calls, which can be a series of whistles or a loud, nasal "aaah".
These vocalizations are an important way for the birds to communicate with each other, particularly during breeding season.
One of the Javan myna's closest relatives is the Common Myna, which is also a member of the starling family.
Song & Calls
The Javan myna's vocalizations are similar to the common myna, and it uses a high-pitched tweet as an alarm call. This unique sound helps the Javan myna communicate with other birds and alert them to potential threats.
Birds like the Javan myna and the common myna have distinct vocal patterns that can be used to identify them. In fact, the Javan myna's song is often compared to the common myna's.
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Similar Species
The Javan myna's distinctive appearance can sometimes lead to confusion with other species. The great myna (Acridotheres grandis) is one of these similar species.

The jungle myna (A. fuscus) is another bird that might be mistaken for the Javan myna. It can be distinguished from the Javan myna by its different markings.
One key way to tell the Javan myna apart from other mynas is by looking at its coloration. The white wing and tail bars on the Javan myna are a dead giveaway.
The yellow beak and legs of the Javan myna are also a distinctive feature that sets it apart from other mynas.
Conservation Status
The Javan myna's conservation status is a pressing concern. It's currently classified as Vulnerable on the IUCN Red List, indicating that it faces a high risk of endangerment in the wild.
Frequently Asked Questions
What are some interesting facts about the Javan Myna?
Javan Mynas are social birds that often forage in groups of three or more, with one bird keeping watch while the others scavenge. They are also known for building their nests in holes and communicating with a voice similar to the common myna.
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