6. N’kisi, the African Grey Parro
N’kisi was an African grey parrot similar to Alex. Comparably, N’kisi had much more vocabulary than Alex. With a whooping 950 words on his belt, N’kisi was indeed one of the greatest strange animals who could speak human vocabulary. He was able to use these vocabularies in the right context and in complete sentences.
He is reported to have the knowledge of understanding verb forms. For instance he could say “flied’’, even when he hadn’t been taught before. He could also invent new vocabulary for new things he hadn’t been taught by his handlers.