Behaviour
No of observations
Frequency (times/min)
Frequency (times/min)
Duration (second)
Duration (second)
Proportion (%)
Proportion (%)
Mean SD Mean SD Mean SD
Eye-submerging 6,857 5.75 5.48 1.89 0.07 18.11 17.25
Head-dipping 5,421 4.40 5.51 2.60 0.92 19.04 23.51
Vigilance 3,032 2.89 1.66 4.06 2.69 19.93 12.60
Diving 1,487 1.48 1.50 13.13 7.12 32.64 28.81
Swimming 693 0.68 0.78 5.22 6.59 5.97 8.64
Handling 162 0.27 0.52 3.19 4.77 2.06 4.69
Preening 240 0.16 0.26 4.69 4.17 1.19 3.02
Social interacting 103 0.09 0.16 3.83 3.12 1.05 1.97