Question · Mind
Are Ravens Smarter Than Crows?
[science] Both ravens and crows are among the most cognitively capable birds known. Ravens score higher in some domains — future planning, gaze following, social cognition with large networks. Crows (especially New Caledonian Crows) are superior tool manufacturers. American Crows show stronger documented facial recognition. Neither species is definitively "smarter" — they are exceptional in different ways.
What Ravens Do Exceptionally Well
[science] Key cognitive strengths documented specifically in ravens:12
- Future planning: Kabadayi & Osvath (2017) showed ravens select and save tools for tasks up to 17 hours in the future — matching great apes in controlled tests.
- Social cognition: Ravens live in complex non-breeding flocks where they track individual relationships, alliances, and competitive histories across dozens of conspecifics.
- Cache protection via theory of mind: Ravens re-cache food after being watched, perform false caching, and monitor observers' sight lines — suggesting awareness of others' knowledge states (Bugnyar & Heinrich, 2005).
- Gaze following: Ravens follow human gaze around opaque barriers — suggesting they understand something about what others can and cannot see (Bugnyar et al., 2004).
What Crows Do Exceptionally Well
[science] Key cognitive strengths in crows (various species):3
- Tool manufacture: New Caledonian Crows (Corvus moneduloides) fashion hook tools from leaves and sticks — the most complex tool manufacture known in birds. They show causal understanding of physical relationships in a way not demonstrated in ravens.
- Facial recognition (controlled): American Crows show documented individual human face memory lasting at least 5 years in controlled experiments (Marzluff et al., 2010). No equivalent raven experiment has been published.
- Urban problem solving: American and Carrion Crows have been documented using traffic to crack nuts, dropping shellfish onto rocks, and using water to soften food — creative solutions to urban problems.
Why the Comparison Is Difficult
[science] Comparing "intelligence" between species is methodologically fraught:
- Different research groups study different species using different methods — results are not directly comparable.
- Performance depends on the ecological relevance of the task. Ravens may outperform crows on social cognition tasks because their ecology demands more complex social navigation.
- Brain size relative to body mass is similar in ravens and large crows — both have relatively large brains for their body size among birds.
- The same population of ravens can vary substantially in task performance depending on experience, age, and social context.
The honest answer is: they are both remarkable, and the question "which is smarter?" is better rephrased as "what is each species good at, and why?"
Related Questions
Frequently Asked Questions
Which is smarter — a raven or an American Crow?
The question cannot be given a simple answer. Ravens outperform crows in some studies (tool use, future planning, gaze following), while crows — particularly New Caledonian Crows — show more sophisticated physical problem-solving and tool manufacture. American Crows show better-documented facial recognition in controlled experiments. Intelligence is not a single dimension; each species excels in different areas that suit its ecology.
Have ravens and crows been directly compared in the same experiment?
Direct side-by-side comparisons are uncommon because the species are studied by different research groups in different countries. The Kabadayi & Osvath (2017) planning study compared ravens to great apes but not directly to crows. Cross-species comparisons are methodologically difficult — experimental design, familiarity with researchers, and social context all affect performance.
Do ravens use tools the way New Caledonian Crows do?
No. New Caledonian Crows are the most sophisticated tool users among birds — they manufacture hooks from leaves and use them to extract prey. Ravens show tool use in experiments (selecting and saving tools) but do not manufacture multi-step tools in the wild. Wild Common Raven tool use, in contrast to the crows, is rare and simple.
Sources
- Kabadayi, C. & Osvath, M. (2017). Ravens parallel great apes in flexible planning for tool-use and bartering. Science, 357(6347), 202–204.
- Bugnyar, T. & Heinrich, B. (2005). Ravens, Corvus corax, differentiate between knowledgeable and ignorant competitors. Proceedings of the Royal Society B, 272, 1641–1646.
- Marzluff, J.M. & Angell, T. (2005). In the Company of Crows and Ravens. Yale University Press. — corvid cognitive comparison.
[science] peer-reviewed study or field-guide data