I always figured crows were just loud, shiny-object enthusiasts with an attitude problem. Then I started reading the actual research, and now I’m a little afraid of them. These birds recognize your face, remember what you did, tell their friends about it, and occasionally interfere with police investigations. Scientists keep ranking crow intelligence somewhere between “seven-year-old child” and “small feathered lawyer.” Here are five true things about crows that made me start being polite to the ones in my yard.
Did you know crows recognize individual human faces and hold grudges for years?
Researchers at the University of Washington proved this in one of the great mad-scientist experiments of our time. Wildlife biologist John Marzluff and his team put on a rubber caveman mask, then trapped and banded a handful of crows on campus. The crows were released unharmed, but they did not forgive. For years afterward, anyone strolling through campus in that mask got dive-bombed and screamed at by furious crows, including birds that were never trapped and birds that hadn’t even hatched when it happened. The crows taught each other, and their kids, that this specific face was the enemy. More than a decade later, mask-wearers were still getting scolded. So if a crow seems to have it out for you personally, it probably does, and it has told everyone.
Did you know crows leave gifts for humans they like?
Grudges are only half the ledger, because crows also keep track of their friends. The most famous case is Gabi Mann, a young girl in Seattle who regularly fed the crows in her backyard. The crows started paying her. They left trinkets on the empty feeder tray: an earring, polished stones, buttons, screws, Lego pieces, and her prized possession, a tiny pearl-colored heart. She kept the collection carefully labeled in bead containers, like evidence of the world’s strangest business relationship. Researchers say gift-giving behavior shows up wherever people feed crows consistently. Which means the transaction is real: peanuts in, jewelry out. It’s not a great exchange rate, but it’s the only bird on the block offering anything at all.
Did you know crows make their own tools, and one famously bent a wire into a hook on the first try?
New Caledonian crows craft hooked tools out of twigs and jagged leaf edges in the wild, which already puts them in an exclusive club with chimps and, well, us. But a crow named Betty at Oxford became a legend in 2002 when researchers gave her a bucket of food at the bottom of a tube and a straight piece of wire. Betty looked at the problem, wedged the wire, bent it into a hook, and fished the bucket right out. She had never seen wire before. Zero engineering classes, zero YouTube tutorials, one functional tool. Plenty of humans have assembled furniture with clearer instructions and worse results.
Did you know crows hold funerals for their dead?
When a crow finds a dead crow, it doesn’t just fly past. It starts calling, and soon a whole mob gathers around the body, shrieking together in what scientists call a “funeral.” It looks eerily like mourning, but researchers such as the University of Washington’s Kaeli Swift found there’s cold strategy in it too: the crows are running an investigation. They study the scene, note the location and any humans or predators nearby, and file it all away as a place, and a face, associated with death. In experiments, crows that saw a person holding a dead crow scolded that person and avoided the area for days afterward. In other words, it’s a funeral where every guest is also a detective. Naturally, the gathering itself is called a “murder.”
Did you know a crow once stole a knife from an active crime scene?
In 2016, Vancouver police responding to an incident cordoned off a crime scene, only for a local celebrity crow named Canuck to swoop in, grab a knife from inside the police tape, and fly off with the evidence. An officer had to chase him down before he finally dropped it. Canuck was already famous around East Vancouver for riding the SkyTrain, stealing keys, and generally behaving like a tiny feathered menace with a fan club; he even had his own Facebook page with tens of thousands of followers. But interfering with a police investigation was a new career high. No charges were filed, mostly because there’s no procedure for arresting a crow. He remains the only suspect in history to literally fly away from the scene.
Send this to someone who’s ever been yelled at by a crow… it might be time for them to start bringing peanuts.
