How to identify the Indian Nightjar

To correctly identify the Indian Nightjar (Caprimulgus asiaticus), check each of these features. Birds can be tricky: habit, habitat, and call often confirm a sighting that a single photo cannot.

Size at a glance

Length

20-25 cm

Wingspan

45-50 cm

Weight

35-60 g

Physical features to check

1. 1

   Plumage

   Overall feather coloration and pattern.

   Overall cryptic brown, grey, and buff plumage, heavily mottled and streaked with darker brown and black, providing excellent camouflage. The upperparts are greyish-brown with fine blackish streaks and buff spots. Underparts are buffy-white with fine dark barring. Males typically have prominent white patches on the primaries and white outer tail feathers, while females have smaller or buffier wing patches and less prominent white on the tail.

2. 2

   Beak shape

   Shape and color of the bill: a key field mark.

   Small, flattened, and dark greyish-brown beak with a very wide gape, fringed with rictal bristles, adapted for aerial insectivory.

3. 3

   Eye color

   Iris color and any distinctive eye markings.

   Large, dark brown eyes, often appearing black.

4. 4

   Leg color

   Leg and foot color.

   Short, brownish-pink to reddish-brown legs and feet.

5. 5

   Distinguishing features

   Standout features that separate this species.

   Cryptic plumage, large eyes, short legs, and a very wide gape. Males have distinct white patches on the wings and outer tail feathers. Females have buffier wing patches and less white on the tail. The lack of a prominent nuchal collar (found in some other nightjars) is also a distinguishing feature.

6. 6

   Juvenile appearance

   How young birds differ from adults.

   Juveniles resemble adult females but are generally paler and more finely barred, with less distinct markings and often lacking the prominent white or buffy wing and tail patches.

7. 7

   Seasonal changes

   Plumage variation between breeding and non-breeding seasons.

   No significant seasonal changes in plumage. Plumage remains cryptic year-round.

8. 8

   Sexual dimorphism

   How males and females differ.

   Males have prominent white patches on the four outermost primary feathers and white tips to the outer two pairs of tail feathers. Females have smaller, buffy-white wing patches and buffy tips to the outer tail feathers, or sometimes no white at all on the tail.

Key field marks

• Vocalization. Listen for its characteristic, monotonous, and repetitive 'chuk-chuk-chuk-chuk...' call, especially at dusk and dawn. This is often the easiest way to detect its presence.
• Plumage and Camouflage. Look for its cryptic brown, grey, and buff mottled plumage. During the day, it will be perfectly camouflaged against leaf litter or bark, often appearing as a lump on the ground or a branch. Look for the large, dark eyes.
• Flight Pattern. Observe its silent, moth-like, and erratic flight at dusk or dawn as it hawks for insects. It often flies low to the ground with deep wing beats.
• White Wing and Tail Patches (Males). In flight, look for prominent white patches on the outer primaries and white tips on the outer tail feathers of males. Females will have smaller, buffier patches or none at all.
• Roosting Behavior. During the day, scan the ground, low branches, or fallen logs in open woodlands and scrub for a motionless, camouflaged bird. They often roost lengthwise on branches, not across them.

Explore the Indian Nightjar