[Illustration: Woodpecker.] "The oriole, or golden robin, is the handsomest bird of all," said Donald.
"A great many birds come in the spring which stay only a few days," said
Frank.
"Where do they come from, and where do they go?" asked Uncle Robert.
"They come from the south, I suppose, where it is warmer. I wonder how they know when it is time to start," said Frank.
"And which way to go," added Donald.
"And how they decide where to stop and build their nests," said Mrs.
Leonard.
[Illustration: Oriole.]
"Very interesting questions, but no one has answered them yet," said Uncle Robert. "Migrating birds are all found in the south in winter, and we see them in the spring."
"What do you mean by mi-grat-ing birds?" asked Susie.
"Birds that fly from one part of the country to another," said Uncle
Robert.