Common Bulbul or Red-Whiskered Bulbul?
Here's how to tell the difference
Common Bulbul
Red-Whiskered Bulbul
Common Bulbul
Pycnonotus barbatus
Also known as: Black-Eyed Bulbul, Brown Bulbul, Brown-Capped Geelgat, Common Garden Bulbul, Garden Bulbul, White-Vented Bulbul
General appearance
The common bulbul, or Pycnonotus barbatus, is a small passerine bird characterized by a compact body, short neck, and long tail. Its primary coloration is a drab brown on the wings and back, transitioning to a lighter shade on the underparts. The bird has a striking black head, complemented by a patch of yellow under its tail and a thin white eye ring.
Male vs female
Males and females of the common bulbul have very similar appearances, making them difficult to distinguish in the wild. Both have the same size and coloration, with no prominent sexual dimorphism. However, during breeding season, male bulbuls often display more aggressive and distinctive behaviors, such as competitive singing and aerial displays.
Juvenile
Juvenile common bulbuls are similar in appearance to the adults, but generally bear a softer, duller coloration. Their feather edges may also be slightly fluffier and less defined than in mature individuals. Over time, as they mature, their coloring gradually darkens to match that of adults.
Size
5.9 - 7.9 in/1.0 - 1.7 oz
There's more to learn about Common Bulbul
View full detailsRed-Whiskered Bulbul
Pycnonotus jocosus
Also known as: Crested Bulbul
General appearance
The Red-whiskered bulbul is a distinctive bird approximately 20cm in size, about the size of a Robin. It exhibits broad, rounded wings, and its tail can be notched, rounded or square-tipped. Most noticeable are its black crest, and a pair of red and white 'whiskers' or patches on the cheeks. The bird primarily showcases a black, brown, grey and white color palette, with red undertail coverts.
Male vs female
Male and female Red-whiskered bulbuls are similar in appearance, with both sexes displaying the same coloration and patterns. Hence, visually, it might be challenging to distinguish between males and females.
Juvenile
Juvenile Red-whiskered bulbuls resemble the adults in size but have less prominent 'whiskers' and their coloration is generally more subdued. The red undertail coverts may not be as vibrant as in adults. Their crest is less developed, giving them a more rounded appearance.
Size
6.7 - 9.1 in/0.8 - 1.1 oz
There's more to learn about Red-Whiskered Bulbul
View full detailsHow to tell the Common Bulbul from the Red-Whiskered Bulbul
Visual differences
The Common Bulbul (Pycnonotus barbatus) displays a drab brown plumage with a black head, lighter underparts, a thin white eye ring, and yellow undertail. It's smaller, weighing 1.0-1.7 oz and measuring 5.9-7.9 inches. The Red-Whiskered Bulbul (Pycnonotus jocosus) has a distinctive black crest, red-and-white cheek patches, and red undertail coverts, with its palette in black, brown, gray, and white. It is slightly larger at 6.7-9.1 inches and weighs 0.8-1.1 oz. The Red-Whiskered Bird's tail is notched, rounded, or square-tipped, unlike the Common Bulbul's long tail.
Key differences and behavior
The Common Bulbul (Pycnonotus barbatus) is more prominent and energetic than the Red-Whiskered Bulbul (Pycnonotus jocosus) due to its loud singing from elevated perches in African open woodlands and gardens. Conversely, the Red-Whiskered Bulbul, native to Southern Asia and found in North American suburbs, is often heard more than seen, with a more subtle courtship display. Both species have a frugivorous diet, but the Common Bulbul also eats a variety of insects, while Red-Whiskered prefers overripe fruits and nectar. Common Bulbuls experience brood parasitism from cuckoos, whereas Red-Whiskered Bulbuls nest communally and are more tolerant of their kind. The breeding of Common Bulbuls involves notable vocal displays, unlike the discreet bowing of Red-Whiskered Bulbuls. Both species utilize gardens for nesting, emphasizing dense vegetation for concealment, but Red-Whiskered Bulbuls use unconventional materials like paper for nest construction.
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