Here are a few reasons why:
- Hunting: Humans hunted dodo birds for their meat, feathers, and oil.
- Habitat destruction: Humans destroyed the dodo birds' habitat by clearing forests for agriculture and development.
- Introduced species: Humans introduced predators, such as rats, cats, and dogs, which preyed on dodo birds and their eggs.
- Competition for resources: Humans competed with dodo birds for food and resources, such as water and nesting sites.
- Disease: Humans may have also introduced diseases that infected and killed dodo birds.