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Table 4 Comparison of models of the time spent in aggressive interactions between swans

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

Species Model k AICc ΔAICc RL wi ER \(R^{ 2}_{\text{c}}\) \(R^{ 2}_{\text{m}}\)
Whooper Swans i + N + (i|D) 2 295.87 0.00 1.00 0.505 1.00 0.351 0.193
  i + (i|D) 1 296.31 0.45 0.80 0.404 1.25 0.215 0.000
  i + T + (i|D) 4 299.29 3.42 0.18 0.091 5.53 0.142 0.129
Bewick’s Swans i + T * W + (i|D) 12 802.43 0.00 1.00 0.664 1.00 0.343 0.233
  i + (i|D) 1 805.67 3.24 0.20 0.131 5.06 0.226 0.000
  i + N + (i|D) 2 807.16 4.74 0.09 0.062 10.68 0.236 0.007
  i + W + (i|D) 3 807.74 5.31 0.07 0.047 14.26 0.226 0.000
  i + T + (i|D) 4 808.37 5.94 0.05 0.034 19.51 0.211 0.017
  i + M + (i|D) 5 808.80 6.37 0.04 0.027 24.16 0.224 0.030
  i + T + W + (i|D) 6 810.44 8.01 0.02 0.012 54.83 0.213 0.019
  i + N + M + (i|D) 6 810.74 8.31 0.02 0.010 63.75 0.231 0.030
  i + T + M + (i|D) 8 811.00 8.57 0.01 0.009 72.75 0.198 0.070
  i + N * M + (i|D) 10 813.40 10.97 0.00 0.003 241.39 0.195 0.071
  i + T * M + (i|D) 20 820.81 18.38 0.00 0.000 9786.90 0.216 0.091
  1. A summary of the relative support for each of our candidate models of the time spent by swans in aggressive interactions with other swans. Model parameters: intercept (i), number of swans present (N), month (M), winter (W), time of day (T), and observation identity (D). k refers to the number of fixed effects in the model