Zollner and Lima (1997) have attempted to fill the gap in our knowledge about the ability of real organisms to detect habitat at a distance. In a recent paper, they have introduced a novel approach that they believe will demonstrate how to detect perceptual thresholds in small mammals. They suggest that the movement of white-footed mice (Peromyscus leucopus) is influenced by their limited ability to visually recognize "preferred" habitat (woods) from relatively long distances (> 10 m). However, there is a possible flaw in their design and analysis that we feel others should be made aware of before emulating Zollner and Lima's study.
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