The bird known for its ability to mimic human speech is the African Grey Parrot. These intelligent birds are famous for their impressive vocal abilities and can learn to replicate a vast array of sounds, including human words and phrases. Their cognitive skills and social nature enable them to engage in communication, often mimicking their owner's speech patterns and even some environmental sounds. African Grey Parrots require mental stimulation and social interaction to thrive, making proper care crucial. Their intelligence and trainability have made them popular as companion animals, but they also require a significant commitment from their owners to meet their needs.