Table A2.

Description of male aggressive behaviours

Aggressive behaviours	Description
Lungeing	The male rises up on hindlegs and rapidly thrusts his upper body at his opponent
Chasing	One male rapidly pursues his opponent, remaining in close proximity. Contact and even aggressive lungeing may occur during chasing
Tussling	Both opponents rise up on hindlegs and become interlocked in a prolonged aggressive struggle
Fencing	A male uses his forelimbs to bat his opponent. This includes front-on and side-on action with any of the two front or middle legs, and can be performed by one or both opponents, alone or in combination with other behaviours

From Andrews, 2016; Dow & von Schilcher, 1974; Nilsen et al., 2004.