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True or false: Many dinosaurs (the ancestors of modern birds) had feathers
EUGYs are truly one-of-a-kind
Each entry includes updated information on field marks
Peregrine Falcon
cut into flaps
Sibley Birds West - 2nd Edition Owl True or false: Many dinosaursSibley Birds West, Field Guide to Birds of Western North America: 2nd Edition This compact and comprehensive guidebook written and illustrated by David Allen Sibley, has been completely updated and describes and illustrates 715 bird species found west of the Rocky Mountains. Each entry includes updated information on field marks, call descriptions, behavior, nesting, feeding, and habitat. Paperback: 504 pages Product Dimensions: 4. 8 x 1. 1 x 7. 8