Esmaspäev, august 03, 2026

Ajalugu, Täna ajaloos

TÄNA AJALOOS, 19. juuli ⟩ Kindral Laidoner küüditati Venemaale

Kea (Nestor notabilis) in New Zealand are known for their intelligence and curiosity, both vital traits for survival in the harsh mountain environment that is their home. Kea can solve logical puzzles, such as pushing and pulling things in a certain order to get to food, and will work together to achieve a certain objective.

The difficulty of defining or measuring intelligence in non-human animals makes the question of avian intelligence resistant to scientific study. In general, birds have relatively large brains compared to their head size. Furthermore, bird brains have two to four times the neuron packing density of mammal brains, for higher overall efficiency. The visual and auditory senses are well developed in most species, though the tactile and olfactory senses are well realized only in a few groups. Birds communicate using visual signals as well as through the use of calls and song. The testing of intelligence in birds is therefore usually based on studying responses to sensory stimuli.

The corvids (including ravens and crows) and parrots are often considered the most intelligent birds, and are among the most intelligent animals in general. Pigeons, finches, chickens, waterfowl such as ducks, penguins and birds of prey such as owls have also been common subjects of intelligence studies.

Studies

Cormorants used by fishermen in Southeast Asia may be able to count

Bird intelligence has been studied through several attributes and abilities. Many of these studies have been on birds such as quail, domestic fowl, and pigeons kept under captive conditions. It has, however, been noted that field studies have been limited, unlike those of the apes. Birds in the crow family (corvids) as well as parrots (psittacines) have been shown to live socially, have long developmental periods, and possess large forebrains, all of which have been hypothesized to allow for greater cognitive abilities.[1]

Counting has traditionally been considered an ability that shows intelligence. Anecdotal evidence from the 1960s has suggested that crows can count up to 3.[2] Researchers need to be cautious, however, and ensure that birds are not merely demonstrating the ability to subitize, or count a small number of items quickly.[3][4] Some studies have suggested that crows may indeed have a true numerical ability.[5] It has been shown that parrots can count up to 6.[6][7]

Cormorants used by Chinese fishermen were given every eighth fish as a reward, and found to be able to keep count up to 7. E.H. Hoh wrote in Natural History magazine:

See also

References

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