Bird population is plummeting
CAROL BROWNER New York

A new analysis by the National Audubon Society reveals that populations of some of America's most familiar and beloved birds have taken a nosedive over the past 40 years, with some down as much as 80 percent. The dramatic declines are attributed to the loss of grasslands, healthy forests and wetlands, and other critical habitats from multiple environmental threats such as sprawl, energy development, and the spread of industrialized agriculture.

The study notes that these threats are now compounded by new and broader problems including the escalating effects of global warming. In concert, they paint a challenging picture for the future of many common species and send a serious warning about our increasing toll on local habitats and the environment itself.

These are not rare or exotic birds we're talking about- these are the birds that visit our feeders and congregate at nearby lakes and seashores and yet they are disappearing day by day. Their decline tells us we have serious work to do, from protecting local habitats to addressing the huge threats from global warming."

Species on Audubon's list of 20 Common Birds in Decline have seen their populations plummet at least 54 percent since 1967.

Overall, agricultural and development pressures have driven grassland birds to some of the worst declines, followed closely by shrub, wetland and forest-dependent species. Global warming is damaging some key habitats and speeding the spread of invasive species that spur further declines. Mounting demand for corn-based fuels is expected to result in increased use of marginal farmland that currently serves as important habitat.

People who care about the birds and about human quality of life need to get involved in habitat protection at home, in pushing for better state and national protections and in making changes in their daily routines.

Public response will shape the long-term outlook for the listed species. Fortunately, people's actions can still make a difference. Average citizens can change the fate of these birds just as average citizens helped us confirm the trouble they face. Concerned individuals can visit www. audubon.org for important information.