Climate change threatens to further imperil hundreds of species of migratory birds, already under stress from habitat loss, invasive species and other environmental threats, a new report released today by Secretary of the Interior Ken Salazar concludes.
The State of the Birds: 2010 Report on Climate Change, follows a comprehensive report released a year ago that argued that nearly a third of the nation’s 800 bird species are endangered, threatened or in significant decline. The report is available online at http://www.stateofthebirds.org/
“For well over a century, migratory birds have faced stresses such as commercial hunting, loss of forests, the use of DDT and other pesticides, a loss of wetlands and other key habitat, the introduction of invasive species, and other impacts of human development,” Salazar said in a press relase issued last week. “Now they are facing a new threat–climate change–that could dramatically alter their habitat and food supply and push many species towards extinction.”
According to the reports authors, which included the collaboration of the U.S. Fish and Wildlife Service and experts from some of the nation’s leading conservation organizations, climate changes will have an increasingly disruptive effect on bird species in all habitats, with oceanic and Hawaiian birds in greatest peril.
Key findings from the “State of the Birds” climate change report included in the media release include:
• Oceanic birds are among the most vulnerable species because they don’t raise many young each year; they face challenges from a rapidly changing marine ecosystem; and they nest on islands that may be flooded as sea levels rise. All 67 oceanic bird species, such as petrels and albatrosses, are among the most vulnerable birds on Earth to climate change.
• Hawaiian birds such as endangered species Puaiohi and ’Akiapōlā’au already face multiple threats and are increasingly challenged by mosquito-borne diseases and invasive species as climate change alters their native habitats.
• Birds in coastal, arctic/alpine, and grassland habitats, as well as those on Caribbean and other Pacific Islands show intermediate levels of vulnerability; most birds in aridlands, wetlands, and forests show relatively low vulnerability to climate change.
• For bird species that are already of conservation concern such as the golden-cheeked warbler, whooping crane, and spectacled eider, the added vulnerability to climate change may hasten declines or prevent recovery.
• The report identified common bird species such as the American oystercatcher, common nighthawk, and northern pintail that are likely to become species of conservation concern as a result of climate change.
White-tailed Tropicbird chick by Elena Babij
Birds are considered indicators of the health of our environment. The reports offers suggestions such as conserving carbon-rich forests and wetlands, and creating incentives to avoid deforestation and reducing emissions.
The report is the product of a collaborative effort as part of the U.S. North American Bird Conservation Initiative, between federal and state wildlife agencies, and scientific and conservation organizations including partners from American Bird Conservancy, the Association of Fish and Wildlife Agencies, Cornell Lab of Ornithology, Klamath Bird Observatory, National Audubon Society, The National Fish and Wildlife Foundation, The Nature Conservancy, U.S.D.A. Forest Service, U.S. Fish and Wildlife Service, and the U.S. Geological Survey.