Gould-Beierle K
University of Nebraska, USA.
J Comp Psychol. 2000 Dec;114(4):347-56. doi: 10.1037/0735-7036.114.4.347.
Birds were tested in an open-room radial maze with learned spatial locations that varied from trial to trial (working memory) and locations that remained spatially stable (reference memory). Three of the species, the Clark's nutcracker (Nucifraga columbiana), pinyon jay (Gymnorhinus cyanocephalus), and Western scrub jay (Aphelocoma coerulescens) store food to varying degrees. The other species, the Eurasian jackdaw (Corvus monedula) does not. Pinyon jays and scrub jays performed better than the nutcrackers and jackdaws in both working and reference memory components of the maze. The pinyon jay and jackdaw performed as would be expected on the basis of their natural history and previous research, but the scrub jay and nutcracker did not. Results are consistent with phylogenetic relationships among the 4 species, but could also be explained by differences in response strategies or interference in processing both types of memory components of the maze.
鸟类在一个开放空间的放射状迷宫中接受测试，迷宫中有每次试验时位置都不同的习得空间位置（工作记忆）以及空间位置保持稳定的位置（参考记忆）。其中三个物种，即克拉克星鸦（Nucifraga columbiana）、美洲松鸦（Gymnorhinus cyanocephalus）和西丛鸦（Aphelocoma coerulescens）会不同程度地储存食物。另一个物种，即寒鸦（Corvus monedula）则不会。在迷宫的工作记忆和参考记忆部分，美洲松鸦和丛鸦的表现优于星鸦和寒鸦。美洲松鸦和寒鸦的表现符合基于它们的自然史和先前研究的预期，但丛鸦和星鸦却并非如此。结果与这四个物种之间的系统发育关系一致，但也可以用反应策略的差异或迷宫两种记忆成分处理过程中的干扰来解释。
