White-spectacled Bulbul vs Cape Bulbul

In short

The eye-ring color is the most reliable field mark: White-spectacled Bulbul has a distinctive white eye-ring, whereas Cape Bulbul has a white eye-ring but with a more prominent white crescent above the eye. Both species share a similar structure and general coloration, making the eye-ring a crucial feature for identification.

Identification tips

• Check the eye-ring: White-spectacled has a complete white ring; Cape has a crescent.
• Consider habitat: White-spectacled prefers arid areas; Cape is often in coastal scrub.
• Listen to calls: If possible, familiarize yourself with their distinct vocalizations.
• Look for overlap: In transitional habitats, rely on eye-ring distinction.

Size

Both species are similar in size, typical of bulbuls, making size an unreliable differentiator.

Plumage

White-spectacled Bulbul has a white eye-ring, while Cape Bulbul's eye-ring is more crescent-shaped above the eye. Both have dark brown plumage with lighter underparts, but these differences are subtle and not reliable in the field.

Behaviour

Both species exhibit typical bulbul behavior, such as active foraging and perching in open areas, making behavior a poor differentiator.

Habitat

White-spectacled Bulbul is found in drier, more arid regions, while Cape Bulbul is more common in fynbos and coastal scrub habitats. However, overlap can occur in transitional areas.

Voice

Vocalizations differ but are not easily described without audio. White-spectacled Bulbul has a varied song, while Cape Bulbul's calls are more melodic. Listening to recordings is recommended.