This hummingbird “sings” with its tail to trick potential mates

You might think being able to hover in place and dip your long, stealthy beak into the sweetest nectar would be enough as a male hummingbird to attract a mate, but it turns out female Costa’s hummingbirds are a little more demanding. Scientists researching the birds have observed unusual flying patterns, in which the male birds produce an unexpected type … Continue reading