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For several weeks Pancho, the quick-tongued green parrot at Washington’s Pan American Union, had reviled an Argentine student named Victor Fernandez, who went there to bone up on Latin American ...

Wilson's phalaropes fly in a murmuration over tufa formations at Mono Lake. Thousands of birds fill the air over Mono Lake, banking and swooping in a swirling murmuration that resembles an aerial ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Some 220 flamingos ...