Quick Answer
A group of crows is called a "murder". This spooky name originates from ancient English folklore, where people believed crows gathered to judge and even sentence their own kind. It's fascinating how this dark imagining has stuck with us, giving these intelligent birds such a dramatic collective noun.
In a hurry? TL;DR
- 1A group of crows is historically called a 'murder,' originating in the mid-15th century.
- 2The term likely stems from folklore about crows judging and killing offenders, and their scavenging nature.
- 3Crows gather around dead flock mates for 'risk assessment,' not mourning, to identify dangers.
- 4These intelligent birds recognize faces and pass down information about threats to their young.
- 5The name 'murder' became popular through Victorian-era 'terms of venery' guides for the gentry.
- 6Crows' necrophagous habits and mobbing behavior around corpses support the 'murder' designation.
Why It Matters
It's surprisingly useful to know that "murder" for a group of crows stems from their clever, though grim, way of assessing danger near a dead bird.
A group of crows is called a murder, a term originating from 15th-century folk observations of the birds' macabre social habits and scavenging nature. Unlike more pastoral collective nouns, this designation reflects a historical association between corvids and death.
Key Facts and Origins
- Term: A murder of crows
- Era of Origin: Mid-1450s
- Primary Source: The Book of Saint Albans (1486)
- Biological Family: Corvidae
- Cognitive Ability: Equivalent to a 7-year-old human child
Why we call them a murder
The term belongs to a Victorian-era obsession with company terms or terms of venery. These were linguistic flourishes used by the gentry to describe groups of animals. While a group of owls is a parliament and a group of ravens is an unkindness, the crow received the most sinister branding.
Historical folklore suggests that crows were believed to hold court over members of their flock who had committed an offence. If found guilty, the group would allegedly set upon the individual, resulting in a literal murder. While this is largely mythic, the sight of black-clad birds circling a carcass or following medieval armies solidified the name in the English lexicon.
The science of the scavenge
The label is not entirely without biological merit. Crows are necrophagous, meaning they thrive on the remains of the dead. According to research published by Dr. Kaeli Swift at the University of Washington, crows possess a complex relationship with death that few other species share.
In her study of corvid thanatology, Swift found that crows gather around a dead peer not to mourn in the human sense, but to conduct a risk assessment.
By mobbing a corpse and cawing loudly, the murder alerts other members to danger. This behaviour, while looking like a chaotic ritual to early observers, is actually a highly evolved survival strategy.
Superior avian intelligence
Crows are among the most intelligent animals on Earth, with a brain-to-body mass ratio that rivals some primates. Unlike other birds that rely on instinctual flight patterns, crows demonstrate causal reasoning and tool use.
In contrast to the solitary nature of hawks or the chaotic swarming of starlings, a murder of crows operates with a distinct hierarchy. They can recognise individual human faces and pass that information down to their offspring. If a specific human is perceived as a threat, the entire murder will learn to harass that individual, even if they have never encountered them before.
Cultural impact and etymology
The first recorded appearance of the term was in the Egerton Manuscript around 1450, later popularised in Dame Juliana Berners' The Book of Saint Albans. These books were essentially manuals for the social elite, teaching them the correct terminology for hunting and nature.
Real-world implications
Today, the term is used more in literature and trivia than in hard ornithology, where researchers typically prefer the neutral term flock. However, the social structure of a murder remains a subject of intense study in urban ecology.
- Urban adaptation: Crows in cities have learned to use traffic to crack nuts, placing them in front of car tyres and waiting for the lights to change.
- Warning systems: A murder can communicate the presence of a specific predator—like a Great Horned Owl—across several kilometres through a chain of vocal alerts.
- Social learning: Younger crows stay with their parents for several years to help raise future broods, a rare trait known as cooperative breeding.
Is a murder of crows the same as an unkindness of ravens?
No. While both are corvids, ravens are larger, travel in smaller numbers, and have their own distinct collective noun. A group of ravens is called an unkindness or a treachery.
Do crows actually kill their own kind?
It is rare but possible. Intraspecies aggression usually occurs over territory or mating rights rather than the judicial executions described in medieval folklore.
How many crows make a murder?
There is no specific number required to trigger the term, though in a linguistic sense, it generally applies to any group larger than a pair.
Key Takeaways
- Historical Roots: The term murder was solidified in the 15th century as a social display of linguistic wit.
- Survival Strategy: Crow gatherings around the dead are for predator detection, not ritualistic killing.
- High Intelligence: Crows can recognise human faces and transmit that knowledge across generations.
- Social Complexity: A murder often consists of extended family units that work together to find food and protect territory.
While the name suggests a dark ritual, the reality of the murder is far more impressive: a sophisticated, highly intelligent community of birds that have mastered the art of urban survival.
