I had never heard of the delightfully named Hudsonian godwit before this piece—yet, given their achievements, they deserve global fame. These slight, mudflat-loving shorebirds hold the record for the longest nonstop flight, clocking journeys of seven thousand miles or more that one scientist deems “technically impossible.” Rivka Galchen follows researchers from Patagonian mudflats to Alaskan bogs as they try to understand the biology behind these incredible flights. Along the way, she even gets to hold one of our little celebrities, an “otherworldly and wondrous” experience.

Migratory shorebirds are usually not a person’s first bird crush. They lack the supernatural aura of the resplendent quetzal, and they don’t go in for outlandish mating displays like that of the prairie chicken. As the Princeton University biology professor and shorebird-lover David Wilcove put it, migratory shorebirds can give an impression of being “little brown guys, buzzing around in the mud, not too big and not too small, and, whether one is a stint or a phalarope or a knot or a godwit, they’re just kind of there.” And yet, Wilcove told me, they are a birder’s kind of bird. Once people get to know them, they tend to fall in love.

War stories, new colors, and the joy in getting hands on in art and gardening.

Ready to test your knowledge of hue, value, and saturation? Rivka Galchen’s latest for The New Yorker is a trove of fascinating details about our understanding of color. Galchen opens with the buzziest tidbit: an experiment conducted by a vision scientist who used a laser to stimulate a selection of his own cone cells and glimpse a color unknown outside of his laboratory. From there, she roams—through philosophy and art history, from studios to pigment shops—complicating our understanding of perception with each new turn of her titular question.

In the children’s novel “The Midnight Fox,” by Betsy Byars, the main character daydreams about digging in his back yard and coming across a “brand-new color.” A friend of mine remembers being captivated by this scene, and trying to picture the color. “I felt like I could conceive of it, but I couldn’t see it,” she said. The eighteenth-century Scottish philosopher David Hume considered at length whether a person who had seen every shade of blue except for one would be able to picture that one un-experienced shade; he concluded that the answer was yes. In my youth, I spent an afternoon wondering if I would have been able to imagine the fluorescent yellow of highlighter markers if I’d never seen it.