DDT Linked to Long-Term Decline of Insect-Eating Birds in North America, Through Analysis of Bird Droppings

http://www.sciencedaily.com/releases/2012/04/120418143759.htm

ScienceDaily (Apr. 18, 2012) — New research findings highlight how deposits of animal droppings are scientifically important for determining the impact of environmental change on threatened species.

Analysis of 50 years' bird droppings inside a large decommissioned chimney on Queen's campus provided evidence that DDT and bird diet may have played a role in a long-term decline for populations of insect-eating birds in North America. The chimney had been a roosting spot for chimney swifts.

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