Malaysian Eared Nightjar (Lyncornis temminckii)

By /
Image of a Malaysian Eared Nightjar in its natural habitat
Birds Nightjar

Introduction

The Malaysian Eared Nightjar (Lyncornis temminckii) is a nocturnal member of the nightjar family, Caprimulgidae. It occurs in forested parts of mainland and island Southeast Asia, where its cryptic plumage and secretive behaviour make it easier to detect by its distinctive night call than by sight. The species was described by the English ornithologist John Gould in 1838 and was formerly placed in the genus Eurostopodus.

Physical Description

The Malaysian Eared Nightjar is a medium-sized nightjar, measuring approximately 25–28 cm in length. Its plumage is predominantly dark brown, greyish-brown and buff, with fine mottling and barring that provide effective camouflage among leaf litter, dead wood and shaded forest-floor vegetation.

Small ear-like feather tufts project from the rear of the crown, although they may be inconspicuous when the bird is resting. The species also has large eyes adapted to low-light conditions, a broad gape suited to catching insects, and stiff bristles around the mouth that may help with prey detection and handling.

Males and females are generally similar in appearance, with no consistently conspicuous sexual difference used for routine field identification. Reliable information on age-related plumage differences is limited, and young birds are not often encountered by observers.

Range and Habitat

The Malaysian Eared Nightjar is distributed from the Thai-Malay Peninsula through Sumatra and Borneo. It has also been recorded in Brunei, Indonesia, Malaysia, Singapore and Thailand. It is regarded as a resident species rather than a long-distance migrant, although local movements may occur in response to habitat conditions and food availability.

It is associated mainly with tropical and subtropical forest, including lowland rainforest, secondary forest, forest edges, clearings and other open areas near woodland. Records also extend into foothill and lower montane environments. The species may tolerate some habitat modification, but it remains dependent on suitable forest landscapes that provide daytime roosting sites and productive nocturnal feeding areas.

Behaviour and Diet

The Malaysian Eared Nightjar is primarily nocturnal and becomes active around dusk. During daylight hours it usually rests quietly on or near the ground, relying on its mottled plumage to blend with leaf litter and woodland debris. Its unobtrusive behaviour makes it difficult to locate even where it is present.

It feeds mainly on insects caught in flight, including moths, beetles and other flying insects. Individuals forage over forest clearings, roads, forest edges and open ground, using their wide mouths to capture prey during agile, often silent flights.

The species is most readily detected by its loud and distinctive vocalisations, particularly during the evening and before dawn. Males may use aerial movements and calling during courtship and territorial activity, but detailed information on breeding behaviour remains limited. As with other nightjars, nesting activity is difficult to observe because eggs and young are associated with inconspicuous ground sites rather than conspicuous nests.

Identification Tips

Look for the following combination of features:

  • A medium-sized, dark and heavily mottled nightjar associated with forest and forest edge.
  • Small ear-like feather tufts at the rear of the crown.
  • A narrow pale collar or nuchal band, which can be visible at close range.
  • Darker overall plumage than the Large-tailed Nightjar, Caprimulgus macrurus.
  • Less obvious white markings on the wings and tail than the Large-tailed Nightjar.
  • Activity at dusk, dawn and during the night, when its distinctive call is often more useful than visual features.

A calling bird seen in flight at twilight may be easier to identify acoustically than visually. Because nightjars can appear very similar in poor light, identification should be based on habitat, size, plumage pattern, flight behaviour and vocalisation together rather than on the crown tufts alone.

Conservation Status

The Malaysian Eared Nightjar is currently assessed as Least Concern on the IUCN Red List. Its broad distribution and occurrence in several countries reduce its immediate global extinction risk, but the species is still affected by the loss and fragmentation of forest habitat.

Logging, agricultural expansion, road development, urban growth and other forms of land conversion can reduce suitable roosting and feeding habitat. Local populations may be more vulnerable where forests are heavily fragmented, even though the species remains globally widespread. Conservation measures should therefore include the protection of remaining lowland and foothill forests, maintenance of connected forest landscapes, and the use of nocturnal bird surveys and acoustic monitoring to improve knowledge of local populations.

Frequently Asked Questions

Where can the Malaysian Eared Nightjar be found?

It occurs in mainland and island Southeast Asia, including the Thai-Malay Peninsula, Sumatra and Borneo. Countries within its recorded range include Brunei, Indonesia, Malaysia, Singapore and Thailand.

Is the Malaysian Eared Nightjar migratory?

It is generally treated as a resident species rather than a long-distance migrant. Local movements may occur, but there is no established evidence that it undertakes regular long-distance migration.

What does the Malaysian Eared Nightjar eat?

It feeds mainly on flying insects, particularly moths, beetles and other insects captured during nocturnal flights over forest clearings, forest edges and open areas.

How can it be identified in the field?

It is a dark, mottled nightjar with small ear-like crown tufts, a narrow pale collar and relatively limited white markings on the wings and tail. Its loud, distinctive call is often the most reliable clue.

Where does it roost during the day?

It usually rests quietly on or close to the ground in shaded forest-floor habitat, where its brown and grey mottled plumage provides camouflage among leaves and fallen debris.

Is the Malaysian Eared Nightjar endangered?

No. It is currently classified as Least Concern globally. Nevertheless, habitat loss and fragmentation remain important local threats, especially where forest is converted for agriculture, infrastructure or urban development.

References

Views: 678

Related posts

Image of a Plain Swift in its natural habitat

Plain Swift (Apus unicolor)

Introduction The Plain Swift, Apus unicolor, is a small swift of the Macaronesian Atlantic islands. It is adapted to an…

Scroll to Top