How to identify the Red-vented Bulbul

To correctly identify the Red-vented Bulbul (Pycnonotus cafer), 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

19-21 cm (7.5-8.3 in)

Wingspan

25-28 cm (9.8-11 in)

Weight

30-45 g (1.1-1.6 oz)

Physical features to check

1. 1

   Plumage

   Overall feather coloration and pattern.

   The adult Red-vented Bulbul has a dark brown to blackish head, a pointed black crest, and a dark brown upper body. The underparts are paler, often whitish or greyish-brown, with streaky flanks. The most prominent feature is the bright crimson-red patch of feathers under the tail (vent). The rump is white or pale grey, contrasting with the darker back and tail. The tail is dark brown to blackish with white tips on the outer tail feathers. Sexes are outwardly similar.

2. 2

   Beak shape

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

   Slender, slightly decurved bill, dark brown to black.

3. 3

   Eye color

   Iris color and any distinctive eye markings.

   Dark brown.

4. 4

   Leg color

   Leg and foot color.

   Dark grey to black.

5. 5

   Distinguishing features

   Standout features that separate this species.

   Erectile black crest, dark plumage, and the bright crimson-red vent. The white rump is also a key field mark, especially in flight.

6. 6

   Juvenile appearance

   How young birds differ from adults.

   Juveniles are duller than adults, with a less prominent crest and a paler, duller reddish-orange vent that may sometimes appear orange-yellow. Their plumage is generally browner and less defined.

7. 7

   Seasonal changes

   Plumage variation between breeding and non-breeding seasons.

   No significant seasonal plumage changes. The plumage remains consistent year-round.

8. 8

   Sexual dimorphism

   How males and females differ.

   Males and females are visually identical in plumage and size.

Key field marks

• Crimson-red vent. The most definitive field mark is the bright crimson-red patch of feathers beneath the tail. This is visible from almost any angle when the bird moves.
• Dark crest. Look for the short, spiky, dark crest on its head, which can be raised or lowered depending on its activity and mood.
• White rump. Observe for a distinct white or pale grey rump, which typically contrasts with the darker back and tail, especially noticeable in flight.
• General plumage. Overall dark brown to blackish head and upperparts, with paler, sometimes streaked, underparts. Absence of any prominent white or red facial patches.
• Vocalizations. Listen for its distinctive, cheerful, and often abrupt song, characterized by a series of hurried and varied notes, often sounding conversational or scolding.
• Behavior. Often active and conspicuous, foraging in open areas, gardens, and along roadsides. Its bold and somewhat aggressive demeanor, especially towards other birds, can also be an identifier.

Explore the Red-vented Bulbul