"I know a Chippy now, when I see it, before you tell us anything about it!" said Dodo gleefully. "There were three or four dear little ones yesterday on the grass, near the dining-room window. They had velvety brown caps on, and said 'chip, chip, chip' as they hopped along, and as they didn't seem afraid of me I threw out some bread-crumbs and they picked them up. Then I knew, to begin with, that they must be seed-eating birds." "How did you know that?" asked Nat. "Bread-crumbs aren't seeds!" [Illustration: Chipping Sparrow.] "No, but bread is made of ground-up wheat-seed! Don't you remember Olive said so last week when she told us about all the grains?" "Yes," said Nat reluctantly. "Birds that won't eat seeds won't eat bread-crumbs either," continued Dodo earnestly; "'cause I tried Wood Thrushes with bread-crumbs last week and they simply turned up their noses at them." Rap and Nat laughed at the idea of birds turning up their noses, but the Doctor said: "Very good indeed, Miss Dodo, you are learning to use your eyes and your reason at the same time. Tell us some more about your Chippies." "At first I didn't know what they were, and then they seemed like some kind of Sparrows; so I went to the wonder room and looked at some of the books that you left out on the low shelf for us. I couldn't find any picture that matched, but then I began to read about Sparrows, and when I came to Chippy Sparrow I was sure it matched; for the book said it was a clever little fellow with a jaunty red cap that came with his mate to the very door and that children make the Chippy's acquaintance and hunt in the vines on the piazza or in a bush for its nest and that the nest is very neat and made of horsehair--" Here Dodo stopped to get her breath. "Bravo! bravo!" called the Doctor. "I see that I shall soon have to resign my place as Bird Man if this young lady takes to bird hunting and reading also. Is there more to come, little one?"