Brain-to-body mass ratio
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| + | '''Encephalization Quotient''' ('''EQ'''), or '''encephalization level''' is a measure of relative brain size defined as the ratio between actual brain mass and predicted brain mass for an [[animal]] of a given size, which is hypothesized to be a rough estimate of the [[intelligence (trait)|intelligence]] of the animal. | ||
| - | '''Crows''' are members of a widely distributed [[genus]] of birds, '''''Corvus''''', in the family [[Corvidae]]. Ranging in size from the relatively small [[Columbidae|pigeon]]-size [[Western Jackdaw|jackdaw]]s ([[Eurasian Jackdaw|Eurasian]] and [[Daurian Jackdaw|Daurian]]) to the [[Common Raven]] of the [[Holarctic]] region and [[Thick-billed Raven]] of the highlands of [[Ethiopia]], the 40 or so members of this genus occur on all temperate [[continent]]s except [[South America]], and several islands. In Europe, the word "crow" is used to refer to the [[Carrion Crow]] or the [[Hooded Crow]], while in North America it is used for the [[American Crow]] or the [[Northwestern Crow]]. | + | ==See also== |
| - | + | *[[Cranial capacity]] | |
| - | The crow genus makes up a third of the species in the [[Corvidae]] family. Crows appear to have evolved in Asia from the corvid stock, which had evolved in Australia. The [[collective noun|collective name]] for a group of crows is a ''flock'' or a ''murder''. | + | *[[Encephalization]] |
| - | + | *[[Brain-to-body mass ratio]] | |
| - | Recent research has found some crow species capable of not only [[Tool use by animals|tool use]] but also tool construction and meta-tool use. Crows are now considered to be among the world's most [[Animal cognition|intelligent]] animals with an [[encephalization quotient]] approaching that of some apes. | + | |
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Encephalization Quotient (EQ), or encephalization level is a measure of relative brain size defined as the ratio between actual brain mass and predicted brain mass for an animal of a given size, which is hypothesized to be a rough estimate of the intelligence of the animal.
See also
- Cranial capacity
- Encephalization
- Brain-to-body mass ratio
Unless indicated otherwise, the text in this article is either based on Wikipedia article "Brain-to-body mass ratio" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic and friends. See Art and Popular Culture's copyright notice.
