Raven

Bigger than crows

Common confusion: ravens are larger than crows. Quick distinguishing features:

• Size — raven 60–70 cm; American crow 40–50 cm.
• Tail in flight — raven’s wedge-shaped; crow’s fan-shaped.
• Voice — raven deeper and harsher; crow caw is sharper.
• Solitary vs. social — ravens often paired or alone; crows in flocks.

In areas where both occur (most of the Northern Hemisphere), the size difference is the easiest field mark.

A high-IQ bird

Ravens consistently score among the highest in animal-cognition tests, comparable to great apes:

• Problem-solving — multi-step puzzles requiring abstract planning.
• Future planning — ravens cache food in anticipation of needing it later, even rejecting current rewards in favor of better future ones.
• Theory of mind — they observe whether other ravens see them caching food and re-cache later if they were observed (suggesting they understand others’ perceptions).
• Tool use — ravens use sticks and other objects as tools.
• Long memory — they recognize individual humans for years and respond accordingly.

A famous study showed that ravens gesture with their beaks to direct their mate’s attention to objects — analogous to pointing, a behavior previously thought unique to humans.

Mythology and culture

Ravens feature prominently in Northern Hemisphere mythology:

• Norse — Odin’s two ravens Hugin (thought) and Munin (memory) flew daily across the world to bring him news.
• Native American (Pacific Northwest) — Raven is a creator-trickster figure, central to many origin stories.
• British — the legend that the kingdom will fall if the Tower of London ravens leave; six are kept there at all times.
• Edgar Allan Poe — “The Raven” (1845) cemented the bird’s literary reputation as ominous.

Pair bonds

Ravens form lifelong monogamous bonds. Pairs maintain large territories and stay together year-round. Together they perform aerial displays — dramatic synchronized rolls, dives, and somersaults — that appear to serve both pair-bonding and territorial advertisement functions.

Young ravens form non-breeding flocks of single adolescents that wander territory edges, much like young humans in their twenties.