Results Test 1: Chromatic background matching in free-ranging lizards The GLM reported a highly significant difference in chromatic background matching (JND) of P. erhardii backs between comparisons with chosen backgrounds and other lizards’ backgrounds on the same island, as perceived by avian predators (F 1,255 = 166.418, P < 0.001; Fig. 2 ).
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Microhabitat choice in island lizards enhances camouflage against avian predators.
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