"The Farm is full of Jennies and Johnnies!" "They build in bird-boxes," said Dodo.
"And in old tin cans, and water pots, and anything they find," said Rap.
"And Jenny does most of the work; if the can is very large she fills it full of sticks until there is only a cosy little corner left for the nest, for she is a very neat bird," said the Doctor, when he could be heard.

"She keeps her house nice and clean, and is very industrious too, making a fresh nest for every new brood, which means a great deal of work, for Wrens often raise three families a season." "But Johnny Wren works too, doesn't he ?" asked Nat; "he is always taking home bugs and things, and he sings as if he would split." "Wrens live in woodpiles in winter," said Rap.
The Doctor laughed heartily at the hurry with which the children told their knowledge.
"Everybody has a bowing acquaintance with the House Wren," he said, "for they are seen everywhere through the United States, those that are citizens of the West being a trifle paler in color and more sharply barred than their easterly brothers, but all having the same habits; even the Rock Wren is as jolly and sociable as his house-loving cousins.
"But the Wren that Rap says lives in the woodpile in the winter is not our House Wren, but another member of the same family--the smallest of all, called the Winter Wren.
"He is a citizen of the far North, whence he follows the mountains down to Carolina, and he is chiefly seen when he visits the Eastern States in the winter--hence his name.

But few who see him then have heard his ripple-song--one of the sweetest bits of our bird music." "Hear Johnny Wren singing on the trellis, and his wife scolding at him all the time, too.

I wonder why she does it ?" said Nat.
"She is only making believe scold," said the Doctor, "because she has a quick temper and wants to say something, and cannot exactly sing.
Johnny and Jenny make a great fuss, but they are really very fond of each other and make the very best of citizens, eating no fruits and being officers in the guilds of Ground Gleaners and Tree Trappers." "Look!" said Dodo, "Jenny is scolding and dancing about, and Johnny is singing away again.

What is the matter with them, Uncle Roy ?" [Illustration: House Wren.] "Did you never hear the 'Wrens' duet'?
That is what they are singing now.