ScienceDaily Posted May 22, 2018 Share Posted May 22, 2018 Usually, birds of a feather flock together -- but in the Amazon, some flocks feature dozens of species of all shapes and colors. A new study singles out one reason why these unusually diverse flocks exist: lookout species that call in alarm when they spot dangerous predators. View the full article Link to comment Share on other sites More sharing options...
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