Figure 1.

Effect of inadvertent social information experiments on settlement decisions in bobolink and Nelson's sharp-tailed sparrow. Response is shown as the percentage of trial plots with no previous territory holder (vacant) that were settled following treatments in pre- and post-breeding periods in two habitat types (hayfield, rough cover). Response in control plots per period trial type, with habitat types combined, is also presented. Significant responses are seen between pre- and post-breeding trials for bobolink (z=2.26, p=<0.0001, Cp=18.6 versus intercept-only Cp=44.05) and between habitat types for Nelson's sharp-tailed sparrow (z=0.81, p=0.03, Cp=41.8 versus intercept-only Cp=44.1).