ITHACA, N.Y. -- A large-scale study has for the first time shown a clear link in North America between acid rain and widespread declines across the breeding range of a songbird, the wood thrush. Calcium depletion affecting the birds' food is a possible cause, Cornell University ecologists say.
The above story is based on materials provided by Cornell University. Note: Materials may be edited for content and length.
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Cornell University. "Songbird Population Declines Linked To Acid Rain." ScienceDaily. ScienceDaily, 16 August 2002. <www.sciencedaily.com/releases/2002/08/020816073151.htm>.
Cornell University. (2002, August 16). Songbird Population Declines Linked To Acid Rain. ScienceDaily. Retrieved March 9, 2014 from www.sciencedaily.com/releases/2002/08/020816073151.htm
Cornell University. "Songbird Population Declines Linked To Acid Rain." ScienceDaily. www.sciencedaily.com/releases/2002/08/020816073151.htm (accessed March 9, 2014).