
Javan Myna (also known as the White-vented Myna)
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Sturnidae, Genus: Acridotheres, Species: A. javanicus
Family: Sturnidae (Starlings and Mynas)
- Shape
- Highly asymmetrical vane typical of flight feathers; the leading edge is very narrow with a prominent notch (emargination) near the tip, which is tapered and pointed.
- Size
- Approximately 8-10 cm in length and 1.5-2 cm in width. This falls within the typical range for a medium-sized passerine like a myna.
- Rarity
- Very Common (invasive in many parts of its current range and often the most visible urban bird).
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Description
The Javan Myna is a medium-sized, bold bird characterized by its uniform dark grey/black plumage, bright yellow bill and legs, and a small crest on the forehead. In flight, it reveals prominent white wing patches and white tail tips. This feather reflects the bird's hardy, aerial nature.
Colour & Pattern
Deep sooty black to dark brownish-black across most of the vane. A characteristic feature of this species is the white patch at the base of the primaries, though in this specific molted feather, the white section may be closer to the hidden quill or appeared as a flash in flight. The tip shows slight pale wear.
Barb Structure
Densely packed pennaceous barbs throughout the main vane providing a stiff aerodynamic surface; plumulaceous (downy) barbs are visible only at the very base near the calamus.
Texture & Surface
Smooth and somewhat glossy on the dorsal surface with a slight metallic sheen characteristic of many starlings. The texture is stiff and resilient to provide lift.
Key Features
Sooty black coloration, distinct asymmetrical 'notched' shape on the outer vane, and a stiff, slightly iridescent texture.
Habitat
Highly adaptable; commonly found in open country, grassland, tropical scrub, and heavily urbanized areas including parks, gardens, and cities.
Geographic Range
Native to Java and Bali (Indonesia). Extensively introduced and now widespread and common across Southeast Asia, including Singapore, Malaysia, Thailand, and parts of Taiwan.
Ecological Role
Omnivorous scavenger and insectivore. They play a role in pest control but also act as a significant invasive competitor for native bird species in Southeast Asia.
Similar Species
Common Myna (Acridotheres tristis) feathers are very similar but typically show a warmer brown tint on the body feathers; Crested Myna (Acridotheres cristatellus) feathers are also similar but larger.
Interesting Facts
Javan Mynas are highly intelligent and capable of mimicking human speech and other environmental sounds. They are social birds that often congregate in massive, noisy roosts in city trees at sunset.
Condition Notes
Fair to Good. There is visible wear at the tip ('scuffing') and some separation of the barbs along the trailing edge, suggesting this was a naturally molted feather at the end of its life cycle.