For help in planning this book, for sharing his bird-notes with the writer, and for a critical reading of the manuscript, acknowledgment should be made to Mr. Robert J. Sim. Certain events in the lives of Eve and Petro and little Solomon Otus are told with reference to his observations of eave-swallows and screech owls; his trip to an island off the Maine coast for gull-sketches added greatly to an acquaintance with Larie; and but for his six-weeks' visit with the loons of "Immer Lake," much of the story of Gavia could not have been told. Since Mr. Sim contributed not only the pictures to the...