On cold autumn evenings I like to watch crows gather on the telephone wires and wonder how a whole legion of superstition grew around such ordinary birds. The phrase 'a murder of crows' has a surprisingly human origin: it comes from medieval English hunting nomenclature, the kind of fanciful collective nouns compiled in 'The Book of Saint Albans' around the late 15th century. Those lists—full of terms like a 'sounder' of swine or a 'murder' of crows—mixed observation with poetic imagination, and the grim label stuck because crows were already linked to death and battle in many folk stories.
Crows scavenged on battlefields and graveyards, so their presence after violence was literal and unsettling. That natural behavior merged with myth. Across Celtic regions the battlefield goddess often appears as a carrion bird and the Morrigan is associated with crows; Norse stories give Odin two raven companions, and even if they're technically ravens, people blurred the lines between corvids. Indigenous tales from the Pacific Northwest and creation myths from other cultures treat corvids as tricksters, messengers, or omens. Those layers of myth, plus their glossy black plumage and sudden, noisy gatherings, created a perfect storm for ominous symbolism.
I also like to point out that modern fascination fuels the fear: poets and storytellers like Edgar Allan Poe and comic-book imagery have romanticized the idea of crows as harbingers of doom, reinforcing the medieval tag. But watching them up close—smart, social, sometimes playful—reminds me the word 'murder' is more human projection than crowly intent. They still give me the shivers on foggy nights, though, in the best spooky way.