Superior abstract-concept learning by Clark's nutcrackers (Nucifraga columbiana).

The effects of requiring different response strategies following caching in Clarkâ•Žs nutcrackers (Nucifraga columbiana)

The effects of requiring different response strategies following caching in Clark's nutcrackers (Nucifraga columbiana)" (1994).

The use of relative and absolute bearings by Clark's nutcrackers, Nucifraga columbiana

Use of a geometric rule or absolute vectors: landmark use by Clark's nutcrackers (Nucifraga columbiana).

Clark's nutcrackers (Nucifraga columbiana) were trained to search for a hidden goal located in the center of a four-landmark array. Upon completion of training, the nutcrackers were presented with tests that expanded the landmark array in the east-west direction, north-south direction and in both directions simultaneously. Although the birds learned to search accurately at the center of the lan...

Changing room cues reduces the effects of proactive interference in Clark's Nutcrackers, Nucifraga columbiana.

To determine what factors are important for minimizing interference effects in spatial memory, Clark's Nutcrackers, Nucifraga columbiana were tested for their spatial memory for two serial lists of locations per day. In this experiment two unique landmark sets were either different between List 1 and List 2 or the same. We found that Nutcrackers were most susceptible to interference when the la...

Tests for cognitive mapping in Clark's nutcrackers (Nucifraga columbiana).

In these experiments, the authors examined the nature of the spatial information that Clark's nutcrackers (Nucifraga columbiana) use during navigation and whether this information is represented in the form of a cognitive map. In Experiment 1, nutcrackers were able to use distal cues to locate a small hidden goal. In Experiments 2 and 3, nutcrackers were given the opportunity to develop a map o...