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Scientists Unveil Comprehensive Bird Family Tree

Evolutionary relationships among the world's 10,000 bird species have been tough to decipher, but scientists on Wednesday unveiled the most comprehensive account of the avian family tree ever formulated, detailing how modern bird groups are connected based on genome-wide data from 198 living bird species. They focused in particular on understanding the group called Neoaves, encompassing more than 90 percent of all birds, the exceptions being large flightless birds like ostriches and a...

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