Elliott Coues,
Citizen Bird: Scenes from Bird-Life in Plain English for Beginners
“ Who can tell me the difference between a mouse and a Sparrow?" "I can!" said Dodo; "it's all difference; a mouse hasn't any feathers, or any wings, and it has four feet, and a long tail and whiskers and teeth—" "That will do, little girl, for differences; do you see anything alike between a Sparrow and a mouse, Rap?" "I think the fur is something like feathers, Doctor," answered Rap; "and you told us how a beak was like a mouth without any teeth or lips; then a mouse has four feet and legs; but a bird has only two feet, and two wings instead of four legs and feet like a mouse." ”
