It happens all the time: a bird shows up at your birdfeeder, and it’s not one you’ve ever seen before. What is it? Human nature drives us to name things, and this bird must have a name – we just don’t know what it is. Where to turn? Your trusty field guide, of course! But it wasn’t always so.Lacking decent optical equipment, the identification tool of choice in the 1800s was th...
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