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Table 4 Differences in the three variables describing nest defence behaviour tested for males and females from either the control (C) or UV-reduced (UV-) group (z-transformed data, see Methods)

From: Female attractiveness affects paternal investment: experimental evidence for male differential allocation in blue tits

  UV- (n =13) C (n = 8) Mann–Whitney U-test
Male latency −0.46 −0.45 U = 47.5, p = 0.74
Male rattling −0.62 0.41 U = 34.5, p = 0.21
Male attacks −0.19 −0.56 U = 37.5, p = 0.29
Female latency −0.31 −0.32 U = 46.0, p = 0.66
Female rattling −0.12 −0.15 U = 46.0, p = 0.66
Female attacks −0.32 −0.29 U = 50.0, p = 0.88