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Table 3 Statistical comparison of the proportion of aggressive interactions that were interspecific

From: Aggressive behavioural interactions between swans (Cygnus spp.) and other waterbirds during winter: a webcam-based study

  Bewick’s Swan Mute Swan Whooper Swan Canada Goose Greylag Goose Common Shelduck Northern Mallard Northern Pintail Eurasian Teal Tufted Duck Common Pochard Eurasian Coot Common Moorhen Gull spp.
Bewick’s Swan 0.037 0.000 0.000 1.000 1.000 0.040 0.000 0.000 0.000 1.000 1.000 0.002 0.067
Mute Swan 12.36 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 0.763
Whooper Swan 23.09 5.95 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 0.058 1.000 1.000
Canada Goose 23.03 4.23 0.26 1.000 1.000 1.000 1.000 1.000 1.000 1.000 0.140 1.000 1.000
Greylag Goose 3.02 0.03 1.07 0.44 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000
Common Shelduck 0.16 0.94 2.60 2.06 0.98 1.000 1.000 1.000 1.000 1.000 1.000 1.000 0.328
Northern Mallard 12.21 0.11 4.04 2.45 < 0.01 1.08 1.000 1.000 1.000 1.000 1.000 1.000 1.000
Northern Pintail 30.21 4.58 0.79 0.06 0.26 1.87 2.27 1.000 1.000 1.000 0.116 1.000 1.000
Eurasian Teal 21.72 4.84 0.02 0.05 0.72 2.32 3.11 0.35 1.000 1.000 0.106 1.000 1.000
Tufted Duck 22.94 5.30 0.01 0.08 0.80 2.39 3.43 0.45 < 0.01 1.000 0.081 1.000 1.000
Common Pochard 0.11 < 0.01 0.80 0.43 0.01 0.28 0.01 0.32 0.60 0.65 1.000 1.000 1.000
Eurasian Coot 0.03 3.28 11.49 9.72 1.66 0.19 3.91 10.11 10.31 10.82 0.79 0.122 0.150
Common Moorhen 18.44 4.77 < 0.01 0.23 1.01 2.58 3.32 0.66 0.02 0.01 0.03 10.00 1.000
Gull spp. 11.20 6.58 3.35 4.11 5.05 8.12 6.06 4.53 3.68 3.62 5.01 9.58 3.23
  1. Binomial tests conducted on interspecific proportions towards other species, as reported in Table 2. Values in the lower left triangle represent the χ2 test statistic, while the values in the upper right triangle represent the adjusted P values