Owls are the most enigmatic of birds, writes Jennifer Ackerman in “What an Owl Knows”
Ms Ackerman is a natural-history writer who specialises in the avian world. InWhat an Owl Knows” she offers an absorbing ear-tuft-to-tail appreciation of the raptor that Mary Oliver, a poet, called a “god of plunge and blood”. Owls, it seems, know a lot. Ms Ackerman draws on recent research to explain what and how.
Among their “superpowers”, as Ms Ackerman admiringly calls them, is the ability to fly almost silently, unlike noisy flappers such as hawks. Serrations on the leading edges of their wings dampen turbulence and a coating of velvety fibres muffles sound. Their vision is attuned to nocturnal hunting—their sensitivity to light is 100 times greater than a pigeon’s—but, a researcher explains, they “basically see their world through their ears”.
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