Asian Koel vs Asian Emerald Cuckoo

In short

The Asian Koel and Asian Emerald Cuckoo are both members of the cuckoo family but differ significantly in appearance and behavior. The Asian Koel is larger and more robust, with a distinctive dark plumage in males and barred patterns in females, while the Asian Emerald Cuckoo is smaller, with striking iridescent green plumage.

Identification tips

1. Size and Shape: Look for the larger size and robust build of the Asian Koel compared to the smaller, more compact Asian Emerald Cuckoo. 2. Plumage: Note the glossy black plumage of male Asian Koels and barred brown of females versus the iridescent green of the Emerald Cuckoo. 3. Vocalization: Listen for the loud, repetitive calls of the Asian Koel, especially in the breeding season. 4. Habitat: Consider the setting; Asian Koels are more likely in urban areas, while Emerald Cuckoos prefer dense forests.

Size

The Asian Koel is larger and more robust compared to the smaller, more compact Asian Emerald Cuckoo.

Plumage

Male Asian Koels are glossy black with red eyes, while females are brown with white barring. In contrast, the Asian Emerald Cuckoo is characterized by its iridescent green upperparts and white underparts with green barring. Both sexes of the Emerald Cuckoo share this striking coloration.

Behaviour

Asian Koels are often seen foraging in trees or flying between them, while Asian Emerald Cuckoos are more elusive and tend to stay hidden in the canopy.

Habitat

Both species inhabit wooded areas, but the Asian Koel is more adaptable and can be found in urban areas, whereas the Asian Emerald Cuckoo prefers dense forests.

Voice

The Asian Koel is known for its loud, repetitive calls, especially during the breeding season. The Asian Emerald Cuckoo's calls are less well-documented but are generally quieter and less frequent.