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1.State of the Birds — The 2009 Report (www.stateofthebirds.org)
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2.One Third of U.S. Bird Species Endangered, Survey Finds - NYTimes.com (www.nytimes.com)
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3.Bird "Wives" Ruin Males' Songs When Females Approach (news.nationalgeographic.com)
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4.the Internet Bird Collection (ibc.lynxeds.com)
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5.75% of common European birds at risk from climate change (www.birdlife.org)
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6.Birds' movements reveal climate change in action (www.birdlife.org)
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7.European Goldfinch: established in the U.S.? (net-results.blogspot.com)
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8.
Why do breeders say: "The Female Carries the Song"? (www.upatsix.com)By Bryan Chin (Pacific American Singers chapter)
First published in the American Singer Club newsletter, July 1997 -
9.
Basic Genetic Inheritance (www.upatsix.com)
By Bryan Chin (Pacific American Singers chapter)
First published in the American Singer Club newsletter, April 1997
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