Abstract
Pigeon spatial memory was examined uing a four-arm and radial maze. The maze had four arms, spaced at 90.degree. intervals, extending radially from a central choice area. Subjects were forced into three arms, then permitted from a central choice area. Subjects were forced into three earms, then permitted two choices to enter the remaining arm. Five subjects chose accurately (90% correct) with delays of 5 min or less, their choices depended on extramaze cues, and the food in the target arm provided no essential cues. After an incorrect first choice, subjects'' second choices were more accurate than chance. These data suggest that, while spatial memory has many similar characteristics in rats and pigeons, pigeon spatial memory appears less durable.

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