How are a chicken and bat convergent?

A chicken and a bat are not convergent. They are both vertebrates, but they belong to different classes and have many differences. Chickens are birds, while bats are mammals. Chickens have feathers, while bats have fur. Chickens lay eggs, while bats give birth to live young. Chickens have beaks, while bats have teeth. Chickens have two legs, while bats have four limbs. Chickens can fly, while bats can glide. Chickens are omnivores, while bats are mostly carnivores.