Science has finally confirmed the reason ladies love the rather literally named LL Cool J<\/a>\u2014at least if humans are anything like birds, specifically nightingales. Research suggests that the quality of a male nightingale\u2019s song lets females know how good a father he\u2019ll be.<\/p>\n
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<\/a>The study, published in the journal BMC Evolutionary Biology, found that the better the male nightingale was at singing, the more often he fed his offspring, which is especially important because the males play a big role in raising their young. Because all nightingales are pretty talented singers, it\u2019s essential that the ladies are real critics of nocturnal ditties. They listen not just for the quality of their potential mate\u2019s chirp but also for the complexity of his crooning\u2014scientists found that it\u2019s flight-of-fancy variations such as \u201cbuzz,\u201d \u201cwhistle,\u201d and \u201ctrill\u201d that really earn him bonus points.<\/p>\n