Home / Environment / Kalij Pheasant: Invasive Seed Spreader?
Kalij Pheasant: Invasive Seed Spreader?
29 Oct
Summary
- Kalij pheasants were introduced to Hawaii Island in 1962.
- Pheasants were found to consume and disperse seeds of invasive plants.
- These birds are also implicated as seedling predators in native forests.
Kalij pheasants, introduced to Hawaii Island in 1962 for hunting, have become a significant factor in the spread of invasive plants. A release of 67 birds at Puʻu Waʻawaʻa Ranch that year led to their dispersal across the island.
By 1984, these pheasants were widely distributed, colonizing mid-elevation forests. Subsequent studies in 1981 found that invasive plants, including banana poka and thimbleberry, comprised a large portion of their diet. This consumption suggests the birds unintentionally disperse these exotic seeds.
Further research indicates that Kalij pheasants may also degrade native ecosystems by preying on seedlings of rare Hawaiian plant species. Their presence is now associated with degraded forest environments, prompting concerns about their impact on biodiversity.
