Figure 2.

When breeders were present, the frequency of aggressive displays towards an intruder correlated negatively with the frequency of digging (rs = -0.69, N = 12; P = 0.01). This relationship was also significant for females only (rs = -0.66, N = 9, P = 0.05).

Bergmüller and Taborsky BMC Ecology 2007 7:12   doi:10.1186/1472-6785-7-12
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