If that be true he must have put his finger on the Myrtlebird in four different places.

Unlike most of his family the Yellow-rump is fond of seeds and berries; and so he is able to live further north in winter than any of his brothers.

Unless you are spending the summer near the Canadian border you will not see him in his own home.

But when they are on their journeys in spring and autumn you will meet them almost everywhere, travelling in sociable flocks." [Illustration: Yellow-Rumped Warbler.] "It must be that dark-backed bird with a yellow spot on his tail, that gobbles all the bayberries--and eats the poison-ivy berries too," said Rap.

"Yes, I see that you know him; 'that dark-backed bird with a yellow spot on his tail' is not a bad description of the Myrtle Warbler," said the Doctor; "at least, as you generally see it, in autumn or winter, when that particular spot is the only one of the four which shows off well." "But why is he called _Myrtle_ Warbler ?" asked Nat.