Note to Third Edition (p. 3): With the continued success of this little booklet the authors have been led to revise and enlarge the present issue in the hope that it will prove more helpful and complete to those beginning the outdoor study of birds.

Preface (p. 5): The object of this little book is to furnish those who may be interested in making the acquaintance of wild birds with a simple letter of introduction to 145 birds, the majority of which are commonly seen during the spring migration.

General Hints (p. 7): The identification of wild birds depends quite as much upon accurate observation of their size, motions, flight, characteristic attitudes, manner of feeding, company, sng, call-notes and haunts, as upon details of form and color.