The U.S. Fish and Wildlife Service says it is constructing a plan to try and save the endangered northern spotted owl, by conserving habitat and killing its rival.

A new University of Florida study shows cats are the dominant predator to mockingbird eggs and nestlings in urban areas, prompting conservationists to urge pet owners to keep felines indoors at night.

A federal study indicates one of every five U.S. citizens was involved in birdwatching during 2006, contributing $36 billion to the nation's economy. The U.S.

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