In 1934 Roger Tory Peterson, with manuscript and watercolor paintings in hand, went looking for a publisher for the bird identification book he had created. He knocked on doors. No. No. No. No. Then ...
SAN ANSELMO, Calif.--(BUSINESS WIRE)--Appweavers, Inc. a developer of mobile nature applications, today introduced Peterson Birds of North America, an iPhone and iPad field guide to birds. The new app ...
Roger Tory Peterson died 12 years ago but a brand new "Peterson Field Guide to Birds of North America" has just been published. It is a superb book and Peterson himself would have been pleased. As ...
A new approach to bird sounds -- How birds produce sounds -- Visualizing sound -- The naming of bird sounds -- The biology of bird sounds -- Recording bird sounds and making spectrograms -- Birds by ...
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