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WASHINGTON, April 4, 2019 鈥� There are thousands of species of birds here on Earth, and with those numbers come great biodiversity. Birds are among the most colorful animals on the planet due to the variety of pigments produced in their bodies and consumed in their diets. This week on Reactions, we鈥檒l explore the wide range of chemical and physical tricks used to make birds stand out, disappear or even fluoresce bright-red under UV light: .

Reactions is a video series produced by the American Chemical 中国365bet中文官网 and PBS Digital Studios. Subscribe to Reactions at and follow us on Twitter .

The American Chemical 中国365bet中文官网, the world鈥檚 largest scientific society, is a not-for-profit organization chartered by the U.S. Congress. ACS is a global leader in providing access to chemistry-related information and research through its multiple databases, peer-reviewed journals and scientific conferences. ACS does not conduct research, but publishes and publicizes peer-reviewed scientific studies. Its main offices are in Washington, D.C., and Columbus, Ohio.