Red-Vented Bulbul or Dark-Capped Bulbul?
Here's how to tell the difference
Red-Vented Bulbul
Dark-Capped Bulbul
Red-Vented Bulbul
Pycnonotus cafer
General appearance
The Red-vented Bulbul is a member of the bulbul family of passerines. It is easily identified by its short crest on the head and a characteristic red colour patch on the vent. They are generally around 20cm in length. Their body is primarily black with dark brown mixed in. The head, throat, and crests are black, while the middle of the belly is white.
Male vs female
Males and females appear largely similar with little sexual dimorphism. Both genders flaunt the white belly and red vent patches. Females are slightly smaller and duller than males. It is challenging to distinguish them based on appearance alone.
Juvenile
Juvenile Red-vented bulbuls resemble adults but have less distinctly colored vent patches. Their upper parts are brownish while the belly and under tail coverts are often tinged rust-brown. The head, crest, and throat are not as starkly black, but instead exhibit a mix of browns. Juveniles attain the mature plumage in about one year.
Size
7.9 - 9.1 in/1.1 - 2.1 oz
There's more to learn about Red-Vented Bulbul
View full detailsDark-Capped Bulbul
Pycnonotus tricolor
Also known as: Tricolored Bulbul
General appearance
Dark-capped bulbuls have a blackish-brown upper body and light-grayish underparts. Their tails and wings are brown, while their heads bear a pronounced dark cap. They boast a distinctive red undertail, and sharp yellow eyes with an elegant black eye ring. They are generally medium-sized, averaging about 20cm in length.
Male vs female
Male and females Dark-capped bulbuls exhibit no noticeable sexual dimorphism in their physical appearance. Both sexes share the same distinct coloration and size. Thus, it's challenging to identify the sex visually in the wild.
Juvenile
Juvenile dark-capped bulbuls are similar to adults albeit a more modest and less contrasting coloration. Their caps are more brown than black, and their underparts are more whitish. Additionally, their eyes are brownish before maturing to the adult's distinctive yellow. Juveniles also lack the crimson-red undertail seen in adults.
Size
5.9 - 7.9 in/1.0 - 1.7 oz
There's more to learn about Dark-Capped Bulbul
View full detailsHow to tell the Red-Vented Bulbul from the Dark-Capped Bulbul
Visual differences
The Red-Vented Bulbul (7.8-9 inches) is slightly larger than the Dark-Capped Bulbul (5.9-7.9 inches). Red-Vented Bulbuls have a black head, throat, and crest, with a white belly and red vent. In contrast, Dark-Capped Bulbuls display a blackish-brown upper body, light-grayish underparts, and a dark cap with a distinctive red undertail. Both species lack noticeable sexual dimorphism, but juveniles differ by more subdued colors and eye color: Red-Vented juveniles have brownish upper parts, while Dark-Capped juveniles have browner caps and brown eyes.
Key differences and behavior
The Red-Vented Bulbul (Pycnonotus cafer) and the Dark-Capped Bulbul (Pycnonotus tricolor) differ in several behavioral aspects. Red-Vented Bulbuls, adaptable and invasive, are known for their intelligence, allowing them to avoid repellents in cultivated areas. They are bold foragers, targeting fruits, nectar, and insects, and adjust well to urban settings. In contrast, Dark-Capped Bulbuls, native to southeastern Africa, prefer habitats near water and demonstrate acrobatic flight patterns. Both species have similar diets but Dark-Capped Bulbuls notably prioritize hydration and can often be found near water bodies. In terms of breeding, both form pair bonds, but Red-Vented Bulbuls engage in lively aerial displays, while Dark-Capped Bulbuls rely more on vocalization. Both species construct cup-shaped nests and prefer areas with dense foliage for nesting in gardens. While their feeding at bird feeders is similar, both showing preference for fruits and bird seed mixes, the Red-Vented Bulbul's invasive nature often leads it to human-populated areas globally.
Still not sure? Here are more lookalikes!
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