PAGE
Introductory vii
A Word to the Beginner 1
Bird-Songs 2
Note-Books 3
Specimens 3
Field-Glasses 3
Books 4
Magazines 4
Bird Hikes 5
In the Field 5
Value of Pennsylvania Birds 6
Helping Our Bird Friends 7
Life-Zones in Pennsylvania 8
Bird-Migration in Pennsylvania 9
List of Species 11
Index of Bird Names 163
AN INTRODUCTION TO THE
BIRDS OF PENNSYLVANIA