Cape Bulbul vs White-Spectacled Bulbul

Cape Bulbul

Pycnonotus capensis

Also known as: Cape Geelgat

How to recognise a cape bulbul?

General appearance

The Cape Bulbul, known scientifically as Pycnonotus capensis, is a bird species endemic to the Fynbos biome in South Africa. It is relatively small-sized about 20 cm long, distinguished by its glossy black plumage with an olive-yellowish underbelly. This small bird has a neat black crest, a dark brown eye surrounded by a narrow white eye-ring, and a long slender bill. It's characteristic tail is bulbous and displays prominent white tips and edges.

Male vs female

Male and female Cape Bulbuls appear identical with no significant sexual dimorphism. Both sexes share the same greenish-yellow underparts and distinctive olive-black upperparts. Differences in size or colour can't be reliably used to distinguish males from females.

Juvenile

Juvenile Cape Bulbuls resemble the adult birds but their plumage is less glossy. Additionally, the white edges on the feathers of their wings and tails are broader than in adults. Over time, as they mature, they acquire the glossy adult plumage and their white feather edges become as thin as those of mature birds.

Size

7.5 - 8.3 in/1.0 - 1.7 oz

Habitat

Primary habitat

The Cape bulbul primarily inhabits shrublands and fynbos vegetation of South Africa's southwest coastal region.

Additional range

Additionally, it also occupies broad-leaved woodland and urban gardens, adapting well to domestic or urban environments.

Range Map

What do Cape bulbuls like to eat?

Natural diet

The Cape bulbul primarily feeds on a variety of fruits, berries, and insects. Common fruits include figs and other soft, fleshy fruits. They also consume small invertebrates such as caterpillars, beetles, and ants, which provide essential proteins. The Cape bulbul's diet is opportunistic and may vary seasonally, taking advantage of available resources.

Bird feeders

At bird feeders, the Cape bulbul may consume offerings such as sliced fruits, especially bananas and apples. They are also attracted to nectar solutions, similar to those provided for sunbirds. Occasionally, they may sample bits of suet or even small seeds, though they primarily prefer fruit-based foods.

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White-Spectacled Bulbul

Pycnonotus xanthopygos

How to recognise a white-spectacled bulbul?

General appearance

The white-spectacled bulbul, also known as the yellow-vented bulbul, has a sleek body, average length of 20 centimeters and a wingspan between 20-25 centimeters. It has a black crest, a white spectacled ring around its eyes, and a black stripe across its white cheeks. Its body is mainly greyish-brown with a yellow vent under the tail, thus deriving its other common name. Seasonal changes do not significantly affect its appearance.

Male vs female

Both the males and females of this species exhibit similar physical traits and colorations, making it challenging to distinguish between them based purely on visual characteristics. Their differences mainly exist in their vocalizations, with males having a wider variety of calls for attracting mates.

Juvenile

Juvenile white-spectacled bulbuls lack the pronounced specs and crest of the adults, and have a duller, more uniform brown coloration. The spectalces and crest develop progressively with growth. Therefore, if you spot a bulbul without distinct spectacles, it's likely a juvenile.

Size

7.9 - 9.8 in/1.1 - 1.6 oz

Habitat

Primary habitat

The white-spectacled bulbul primarily lives in savannas, gardens, and farmlands of the Middle East and North Africa.

Additional range

In addition to these common habitats, it also occasionally occupies semi-arid areas and coastal scrubs, indicative of its adaptation to diverse climatic conditions.

Range Map

What do white-spectacled bulbuls like to eat?

Natural diet

The white-spectacled bulbul primarily feeds on a variety of fruits, including berries and figs. It also consumes nectar, which it obtains from flowering plants. Apart from fruits, its diet includes insects and small invertebrates, providing essential proteins.

Bird feeders

At bird feeders, the white-spectacled bulbul often eats a range of seeds and fruits provided by enthusiasts. Common offerings include chopped apples, grapes, and pears. Occasionally, it may also consume suet or seed-based mixes, especially those containing sunflower seeds.

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Cape Bulbul

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White-Spectacled Bulbul

Cape Bulbul

Pycnonotus capensis

Also known as: Cape Geelgat

General appearance

The Cape Bulbul, known scientifically as Pycnonotus capensis, is a bird species endemic to the Fynbos biome in South Africa. It is relatively small-sized about 20 cm long, distinguished by its glossy black plumage with an olive-yellowish underbelly. This small bird has a neat black crest, a dark brown eye surrounded by a narrow white eye-ring, and a long slender bill. It's characteristic tail is bulbous and displays prominent white tips and edges.

Male vs female

Male and female Cape Bulbuls appear identical with no significant sexual dimorphism. Both sexes share the same greenish-yellow underparts and distinctive olive-black upperparts. Differences in size or colour can't be reliably used to distinguish males from females.

Juvenile

Juvenile Cape Bulbuls resemble the adult birds but their plumage is less glossy. Additionally, the white edges on the feathers of their wings and tails are broader than in adults. Over time, as they mature, they acquire the glossy adult plumage and their white feather edges become as thin as those of mature birds.

Size

7.5 - 8.3 in/1.0 - 1.7 oz

There's more to learn about Cape Bulbul

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White-Spectacled Bulbul

Pycnonotus xanthopygos

General appearance

The white-spectacled bulbul, also known as the yellow-vented bulbul, has a sleek body, average length of 20 centimeters and a wingspan between 20-25 centimeters. It has a black crest, a white spectacled ring around its eyes, and a black stripe across its white cheeks. Its body is mainly greyish-brown with a yellow vent under the tail, thus deriving its other common name. Seasonal changes do not significantly affect its appearance.

Male vs female

Both the males and females of this species exhibit similar physical traits and colorations, making it challenging to distinguish between them based purely on visual characteristics. Their differences mainly exist in their vocalizations, with males having a wider variety of calls for attracting mates.

Juvenile

Juvenile white-spectacled bulbuls lack the pronounced specs and crest of the adults, and have a duller, more uniform brown coloration. The spectalces and crest develop progressively with growth. Therefore, if you spot a bulbul without distinct spectacles, it's likely a juvenile.

Size

7.9 - 9.8 in/1.1 - 1.6 oz

There's more to learn about White-Spectacled Bulbul

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How to tell the Cape Bulbul from the White-Spectacled Bulbul

Visual differences

The Cape Bulbul has glossy black plumage with an olive-yellow underbelly, a slender bill, a prominent black crest, and a narrow white eye-ring. It measures 7.5-8.3 inches. The White-Spectacled Bulbul, slightly larger at 7.9-9.8 inches, has a greyish-brown body, a distinctive white eye-ring and a black stripe across white cheeks, with a yellow vent. Both birds share a black crest but differ in body coloration and eye-ring prominence.

Key differences and behavior

The Cape Bulbul and White-Spectacled Bulbul exhibit distinct behavioral and habitat preferences that aid in field identification beyond visual cues. The Cape Bulbul, endemic to South Africa's Fynbos, thrives in shrublands and urban gardens, forming noisy flocks and engaging in mutual preening during courtship. Both parents participate equally in the 14-day nesting period. In contrast, the White-Spectacled Bulbul, found across the Middle East and North Africa, prefers savannas and farmlands, often in pairs of siblings. They construct nests in bushes and low trees, laying 2-4 eggs. Diet-wise, both species enjoy fruits and insects, but White-Spectacled Bulbuls are also drawn to nectar. This species displays vocal diversity, with males boasting a broader call repertoire to attract mates. Both species adapt to human environments, benefiting from bird feeders offering fruits and seeds.