(i) The line “Folks call this a fable. I'll warrant it true” expresses the poet’s comment.
(ii) A fable is a literary genre, mostly prose or verse, and has animals, plants, inanimate objects, and nature as the main characters, which teach the reader a moral lesson. These stories don't have a scientific base and are fictitious. The poet tells his readers that it is a fable but he believes it is true since he likes the lesson that the story teaches. The cricket did not have anything to eat during winters because he was busy enjoying the warm summer weather. The poet wants the readers to be responsible during the sunny days so that they have sufficient time for the winter days.