written by Katherine Patterson, illustrated by Leo and Diane Dillon
I keep seeing that this story is a retelling of a famous Japanese folktale, but I cannot find any other sources for this story. There is a Japanese folktale about mandarin ducks, but it's very different from the story in this book.
There's also just something about the story (the text more than the illustrations) that bothers me. I can't quite pin it down though.