"Five decades ago, when Bill Graber started the Bolivar Peninsula Christmas Bird Count in southeastern Texas, the brown pelican’s future was in doubt. The widespread use of DDT had made the birds’ eggshells too thin, causing the parents to unintentionally crack them during incubation. Despite these setbacks, the species could still be found in small numbers along the Texas coast—but Graber had never seen one during his annual tally. In 1977 his luck changed."
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