Mangrove Cuckoo vs Cocos Cuckoo

In short

The Mangrove Cuckoo and Cocos Cuckoo can be distinguished by their tail patterns and coloration. The Mangrove Cuckoo has a distinctive black auricular mask and white-tipped tail feathers, while the Cocos Cuckoo has rusty flight feathers and a gray cap.

Identification tips

1. Look for the black auricular mask on the Mangrove Cuckoo, absent in the Cocos Cuckoo. 2. Check the tail pattern: Mangrove Cuckoo has white-tipped tail feathers with black proximally on both webs, while Cocos Cuckoo's tail has larger white spots that may overlap. 3. Note the rusty coloration on the Cocos Cuckoo's flight feathers and nape, contrasting with the Mangrove Cuckoo's more uniform coloration.

Size

Both species are similar in size, but specific measurements for the Cocos Cuckoo are not provided.

Plumage

The Mangrove Cuckoo features a grayish-brown upperpart with a black auricular mask and white-tipped tail feathers. In contrast, the Cocos Cuckoo has rusty flight feathers, coverts, and nape, with a gray cap and larger white spots on the tail that may overlap.

Habitat

The Mangrove Cuckoo is found in mangrove and coastal habitats, while the Cocos Cuckoo is endemic to Cocos Island, Costa Rica, and relies on humid, riparian habitats with high native leaf density.