Dominance hierarchies and associated signalling in a cooperative passerine

Journal name: Behavioral Ecology and Sociobiology

Margaux Rata,*, René E. van Dijkb, Rita Covasa,c,d, and Claire Doutrelanta,e

*Corresponding author:

Affiliation: Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa

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Telephone: +27 21 650 3310

Supplementary table: Summary statistics of hierarchy parameters. N= sample size, ID=Identity, Av. = Avoidance relationships, Agg. = Aggressions. Randomisation tests were processed to estimate the significance levels of the orderliness and the steepness indices, significant values (p<0.05) are in italic.

Dominance parameters / Type / Colony ID _ Season / Mean
25_1 / 33_1 / 34_1 / 82_1 / 39_1 / 25_2 / 27_2 / 33_2 / 71_2 / 82_2
Group size / All / 19 / 18 / 32 / 14 / 8 / 14 / 11 / 19 / 18 / 8 / 14.3
N agonistic / All / 207 / 120 / 236 / 41 / 25 / 113 / 387 / 293 / 1009 / 132 / 256.3
N Avoid. / Av. / 65 / 223 / 173 / 302 / 84 / 169.4
N Aggress. / Agg. / 48 / 164 / 120 / 707 / 48 / 217.4
Dyads obs. (%) / All / 28 / 13 / 18 / 25 / 29 / 28 / 93 / 23 / 78 / 68 / 40.3
Av. / 19 / 78 / 17 / 64 / 71 / 49.8
Agg. / 12 / 69 / 13 / 65 / 73 / 46.4
Orderliness / All / 0.84 / 1.00 / 1.00 / 1.00 / 1.00 / 0.71 / 0.91 / 0.61 / 0.86 / 0.82 / 0.88
Av. / 1.00 / 1.00 / 0.64 / 0.89 / 0.90 / 0.89
Agg. / 0.33 / 0.85 / 0.50 / 0.95 / 1.00 / 0.78

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