Behaviour and Social Structure
Adult males are usually solitary outside of the breeding season, but females and their offspring (both sub-adult males and females) live in groups called sounders. Sounders typically number around 20 animals, although groups of over 50 have been seen, and will consist of 2 to 3 sows; one of which will be the dominant female. Group structure changes with the coming and going of farrowing females, the migration of maturing males (usually when they reach around 20 months) and the arrival of unrelated sexually active males.
Wild boar are situationally crepuscular or nocturnal, foraging in early morning and late afternoon or at night, but resting for periods during both night and day. They are omnivorous scavengers, eating almost anything they come across, including grass, nuts, berries, carrion, nests of ground nesting birds, roots, tubers, refuse, insects and small reptiles. Wild boar in Australia are also known to be predators of young deer and lambs.
If surprised or cornered, a boar (particularly a sow with piglets) can and will defend itself and its young with intense vigour. The male lowers its head, charges, and then slashes upward with its tusks. The female, whose tusks are not visible, charges with head up, mouth wide, and bites.
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