ultrafacts: Birds living in cities are performing a type of “avian rap” while their rural counterparts are sticking to more traditional sounds, a study shows.Dutch researchers found that urban species of birds sing short, fast songs rather than the
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ultrafacts: Birds living in cities are performing a type of “avian rap” while their rural counterparts are sticking to more traditional sounds, a study shows.Dutch researchers found that urban species of birds sing short, fast songs rather than the
