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Science 22 February 2008:
Vol. 319. no. 5866, p. 1042
DOI: 10.1126/science.1151810
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Technical Comments

Comment on "International Conservation Policy Delivers Benefits for Birds in Europe"

Rolando Rodríguez-Muñoz,1* Alfredo F. Ojanguren,2 Tom Tregenza1

Donald et al. (Reports, 10 August 2007, p. 810) assessed the impact of the European Union's Birds Directive, a conservation policy enacted in 1979, and reported evidence for positive population changes in targeted species. We argue that their conclusions are overstatements based on unsuitable data and inappropriate analyses.

1 Centre for Ecology and Conservation, University of Exeter, Cornwall Campus, Tremough, Penryn, UK.
2 Marine Science Institute, University of Texas at Austin, Port Aransas, TX 78373, USA.

* To whom correspondence should be addressed. E-mail: R.Rodriguez-Munoz{at}exeter.ac.uk

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Science. ISSN 0036-8075 (print), 1095-9203 (online)