Condition of Bird Population
A study by the National Audubon Society has found that populations of some the most common birds in North America have plummeted since 1967, with some species showing a decline of 80 percent. The study also found that California species were particularly affected, with populations declines of 75 to 96 percent for several species, including the Northern Pintail, Horned Lark, and Loggerhead Shrike. The decline may be due to loss of habitat to urban sprawl, especially grasslands, forests and wetlands, energy development, and industrialized agriculture. Climate change could compound losses in the future.
Read more about this topic: List Of Birds Of Canada And The United States
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