Southern cassowaries are critically endangered in Australia and face significant road mortality in the Wet Tropics, with direct welfare and conservation implications.
Cassowaries struck by vehicles experience traumatic injuries in a large, powerful bird that is typically not immediately killed. Injured cassowaries may be mobile but deteriorate from internal injuries over days. Chick mortality follows father deaths due to prolonged parental dependence. Each road death represents individual suffering and a significant loss to a small, fragmented population. Speed reduction on cassowary crossing roads and wildlife crossing infrastructure have direct welfare benefits.