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Audubon Society: Bird Population Drop is an Environmental Alarm

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An analysis by the National Audubon Society shows that some of the country's most familiar bird populations have taken a nosedive over the past forty years -- some by as much as 80 percent. In Califor

Audubon Society: Bird Population Drop is an Environmental Alarm

(Right: Five birds in California are on the Audubon Society's list of common birds in decline. The Northern Pintail, pictured, is one of the species disappearing in California. Photo: Howard B. Eskin .)

An analysis by the National Audubon Society shows that some of the country's most familiar bird populations have taken a nosedive over the past forty years -- some by as much as 80 percent. In California, several common bird species are in decline. KPBS reporter Ed Joyce has more.

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The Audubon Society says common birds are becoming not quite so common. The group says the decline in bird species is linked to the loss of habitat -- grasslands, healthy forests and wetlands.

While the birds are not in immediate danger of extinction, the threats of global warming and development pressures could hasten their decline.

Gary Langham is the Director of Bird Conservation for Audubon California .

Langham : When birds from so many different kinds of habitat you know not just Southern California but also the Sierra and far Northern California and the Central Valley. When all the species relying on different sorts of habitat are declining then that should serve as a wake-up call to all of us.

In California, the Northern Pintail and Horned Lark topped the list with declines between 96 and 75 percent. Other common species in the state with declining numbers include House Finches, Killdeer and Lark Sparrow.

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Ed Joyce, KPBS News.