<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Richard D. Porter</dc:contributor>
  <dc:creator>Stanley N. Wiemeyer</dc:creator>
  <dc:date>1970</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;EGGSHELL thinning in several species of raptorial and fish-eating birds, whose populations and/or reproductive success have declined dramatically in recent years, has been correlated with residues of DDE [1,1-dichloro-2,2-&lt;/span&gt;&lt;i&gt;bis&lt;/i&gt;&lt;span&gt;&amp;nbsp;(&lt;/span&gt;&lt;i&gt;p&lt;/i&gt;&lt;span&gt;-chlorophenyl) ethylene] in their eggs&lt;/span&gt;&lt;sup&gt;1–3&lt;/sup&gt;&lt;span&gt;. DDE, a common metabolite of DDT [1,1,1-trichloro-2,2-&lt;/span&gt;&lt;i&gt;bis&lt;/i&gt;&lt;span&gt;(&lt;/span&gt;&lt;i&gt;p&lt;/i&gt;&lt;span&gt;-chlorophenyl) ethane] and a nearly universal contaminant in the food of these birds, has been considered to be the major chemical responsible for eggshell thinning.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1038/227737a0</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Nature</dc:publisher>
  <dc:title>DDE thins eggshells of captive American kestrels</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>