It is not a chicken.

Leptodactylus fallax, commonly (and deceptively) known as the mountain chicken or giant ditch frog, is a species of frog that is native to the Caribbean islands of Dominica and Montserrat. The mountain chicken is nicknamed such after being preyed upon as a local delicacy on the islands of Montserrat and Dominica where it is found. It supposedly tastes like chicken[ and the islands are mountainous regions in the Caribbean Sea.

Everything tastes like chicken, except chicken according to this article.

It is a bird of eastern Africa in the turaco family. Typical calls are a nasal haahaahaa, like bleating of a sheep, and a single or repeated gwa (or g’away). It flies from tree to tree in loose straggling groups, calling loudly.

Stupid birds. Do away bird!