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Duck Numbers And Duck Stamp Sales No Longer Correlate

10,000 Birds

4 0.81) and 1995–2008 (r 1?4 Based on the 1955–1994 relationship between total duck breeding population and duck stamp sales, about 600,000 fewer duck stamps than expected were sold annually during 1995–2008. Up to 98% of money raised by the duck stamps is used to purchase or lease habitat within the National Wildlife Refuge system.”.

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