But soon the change in climate also changed their liking for insects, and they became almost wholly seed and vegetable eaters, devouring the young buds on vines and trees, grass-seed, oats, rye, wheat, and other grains.
"Worse than this, they increased very fast and spread everywhere, quarrelling with and driving out the good citizens, who belong to the regular Birdland guilds, taking their homes and making themselves nuisances.

The Wise Men protested against bringing these Sparrows, but no one heeded their warning until it was too late.

Now it is decided that these Sparrows are bad Citizens and criminals; so they are condemned by every one.

All this trouble came because one man, as Rap says, 'thought he was so smart and mixed things up.'" "It was those Sparrows in the city that made me think all wild birds must be ugly; but that was because _I_ was too smart and didn't know anything about other birds," said Nat frankly.
"I think we are getting way off from Nat's yellow bird," said Dodo; "and now I see lots more of Rap's Rose-breasted Grosbeaks, over on the fence.
I want to know what they are doing in the potato field.

I hope they don't dig up the little potatoes." "No, you need not worry about that," said the Doctor, "and you must wait a bit yet, for the Rose-breast does not come until nearly the end of his family." "There must be a great many different-looking birds in this Finch family," said Rap, "if plain Sparrows and yellow Goldfinches both belong to it." "Indeed there are! Did I not say that there were both Quakers and soldiers in it ?" said the Doctor.