ScienceDaily Posted February 7, 2019 Share Posted February 7, 2019 The 'perching birds,' or passerines, are the most common birds in the world today -- they include sparrows, robins, and finches. They used to be very rare. Scientists have just discovered some of the earliest relatives of the passerines, including a 52-million-year-old fossil with a thick, curved beak for eating seeds. View the full article Link to comment Share on other sites More sharing options...
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