The red-billed leiothrix is a non-native species in Hawaii
Jason Gleditsch
Non-native birds are replacing Hawaiis endemic species, adapting to new environments at a blistering pace of evolution.
In the Hawaiian Islands, most native fruit-eating birds have gone extinct and been replaced by introduced counterparts. On the island of Oahu, seed dispersal through fruit consumption is now mostly carried out by non-native species.
The findings of Olson and James support the theory that extinctions have occurred for thousands of years and are not solely the result of modern humans. Many giant mammals on those continents were wiped out by aboriginal Europeans and Asians. The enormous ground sloths, camels, horses, and mastodons that formerly roamed the New World are said to have perished sooner because of Native Americans in North and South America.
Although biologists have long known that a large number of Hawaiian bird species went extinct relatively recently, they claim to be amazed by the variety of bird life found by Storrs Olson and Helen James of the Smithsonian, a husband and wife team who have spent the last 15 years excavating bird bones from sand dunes and lava tubes. Advertisement.
The largest dangers to the remaining Hawaiian birds, according to Holt, might be introduced pests and predators. Between 10 and 25 new alien pests arrive each year. Additionally, island naturalists are terrified that Hawaii may be invaded by the deadly brown tree snake. The island’s birds were eradicated by the recently arrived tree snake on Guam.
It is now claimed that at least 35 and possibly 50 bird species have disappeared from Hawaii due to Polynesians. Olson and James claim that although the animals of the Polynesians might have had an impact, the damage was most likely caused by their insatiable desire for agricultural land and their flightless birds. Other researchers are uncovering similar extinction events across the Pacific. It seems wherever human beings migrated, the birds suffered. Advertisement.
32 extinct Hawaiian bird species are described in a scientific monograph that was released with the new report. Three others had already been mentioned, Olson having reported two of them. When they have finished analyzing every bone they have discovered, Olson and James believe they may have identified more than fifty extinct birds.
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FAQ
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