From THE HISTORY OF THE SEVEN FAMILIES OF THE LAKE PIPPLE-POPPLE.
by Edward Lear

The Parrots lived upon the Soffsky-Poffsky trees, which were beautiful to behold, and covered with blue leaves; and they fed upon fruit, artichokes, and striped beetles.

The Storks walked in and out of the Lake Pipple-Popple and ate frogs for breakfast and buttered toast for tea, but on account of the extreme length of their legs, they could not sit down, and so they walked about continually.

The Geese, having webs to their feet, caught quantities of flies, which they ate for dinner.

The Owls anxiously looked after mice, which they caught, and made into sago-puddings. The Guinea Pigs toddled about the gardens and ate lettuces and Cheshire cheese.

The Cats sate still in the sunshine and fed upon sponge biscuits.

The Fishes lived in the lake and fed chiefly on boiled periwinkles.

And all these seven families lived together in the utmost fun and felicity.

How does the author create humor in this poem?