Red-Vented Bulbul or African Red-Eyed Bulbul?
Here's how to tell the difference
Red-Vented Bulbul
African Red-Eyed 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 detailsAfrican Red-Eyed Bulbul
Pycnonotus nigricans
Also known as: Black-Fronted Bulbul
General appearance
The African red-eyed bulbul is characterized by its medium size, nearly 20-25 cm in length, and its distinctive khaki-grey plumage. Easily noticeable are its crimson-red eyes, which aptly offers its name. It also has a distinct thin black crest above its eyes, giving it a capped appearance. Its tail and wings are darker, almost black. This species does not have significant seasonal variations.
Male vs female
Both male and female African red-eyed bulbuls share similar external features, making sexual dimorphism in this species less distinct. The males tend to be slightly larger in size compared to females. However, their coloration, red eye, and capped appearance are consistent across both genders. This feature makes it a bit challenging to distinguish between the sexes in the wild.
Juvenile
Juvenile African red-eyed bulbuls lack the vibrant coloration seen in adults. They have duller grey-brown plumage and their eyes are not yet the characteristic red, instead they have brownish eyes. Their crest is less pronounced, and it takes a few months until they acquire the distinctive adult features.
Size
7.5 - 8.3 in/0.8 - 1.3 oz
There's more to learn about African Red-Eyed Bulbul
View full detailsHow to tell the Red-Vented Bulbul from the African Red-Eyed Bulbul
Visual differences
The Red-Vented Bulbul is 7.9-9.1 inches long with primarily black plumage, a red vent, black head and crest, and white belly. In contrast, the African Red-Eyed Bulbul is slightly smaller at 7.5-8.3 inches, featuring khaki-grey plumage, a thin black crest, crimson-red eyes, and darker tail and wings. The Red-Vented Bulbul's beak is more robust, whereas the African Red-Eyed Bulbul has a capped appearance from its thin black crest. These differences, especially in plumage color and eye color, aid in distinguishing between the two species.
Key differences and behavior
The Red-Vented Bulbul (Pycnonotus cafer) and the African Red-Eyed Bulbul (Pycnonotus nigricans) differ distinctly in their behavior and ecology. Red-Vented Bulbuls are highly adaptive, thriving from South Asian forests to urban parks globally, whereas African Red-Eyed Bulbuls are native to southern Africa's savannas and arid regions. Both species share a diet of fruits and insects, but the Red-Vented Bulbul also consumes nectar and at bird feeders, enjoys various fruits and seeds. Breeding displays differ slightly, with the Red-Vented Bulbul using vocalizations and food offerings, compared to the African counterpart's elaborate singing and posturing. Both nest in shrubs or trees, laying 2-3 eggs, but Red-Vented Bulbuls often favor human-inhabited gardens. Despite these behavioral commonalities, environmental adaptability sets the Red-Vented Bulbul as more invasive, while the African Red-Eyed Bulbul remains region-specific and often associates near water sources.
Still not sure? Here are more lookalikes!
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