North American Birds on Decline

Birds make for a good indicator of ecological sustainability. As advanced mammals, their decline is evidence of ecosystem declines that will impact human populations as well. Human habitat is threatened as never before – from forest fragmentation, toxics, climate change, and water scarcity. As go the birds will go the humans.
North American birds on the decline | csmonitor.com
In a striking trend that spans North America's key ecosystem regions – grassland, shrubland, forest, wetland, and urban – almost a third of 654 bird species native to North America are in “statistically significant decline,” according to a first-ever “State of the Birds” report unveiled last month by the Audubon Society.

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