(i) In stanza 3, the bird says 'One day, I fluttered from my nest, To see what I could find, I said the world is made of leaves.' The bird's understanding was limited to what it could see from its position in and near the tree—leaves surrounded it, so it assumed the world was made entirely of leaves. (ii) The phrase 'I said' means 'I spoke' or 'I expressed my opinion.' In the context of the poem, the bird is expressing what it thought or declared about the world being made of leaves. 'Said' is the past tense of 'say,' which means to speak or express in words. (iii) The bird realized it had been 'blind' (meaning unaware or ignorant) because while it was inside the nest, it could not see the leaves that surrounded it. Only after coming out of the nest did it discover the leaves. The word 'blind' here is used metaphorically to mean lacking understanding or awareness, not literally unable to see.