Invasive bullfrogs and sunfish in the southwestern Washington floodplains don’t seem to be a detriment to native amphibians and fish in the area. That’s surprising, researchers say, since that isn’t often the case in higher …
Ecologically, Madagascar day geckos aren’t supposed to be in Florida. The species didn’t arrive until the 1990s, when it was introduced to adorn gardens in the Florida Keys. According to climate prediction models, the geckos …
Over the past decades, common watersnakes have invaded California wetlands, and their range keeps expanding farther and farther south. As this happens, managers worry these nonnatives could affect native species like California’s threatened giant garter …
Across the country, nonnative parrots are making themselves at home. The parrots of San Francisco’s Telegraph Hill have become famous thanks to a documentary about them, but they’re not alone, according to a study in …
A population of nonnative rhesus macaques (Macaca mulatta) introduced in central Florida is set to double by 2022 unless steps are taken to reduce it, biologists found. But dealing with the monkeys, which are a …
When Japanese bush-warblers (Cettia diphone) were introduced to Oahu in the 1920s, it might not have been good for native wildlife, but it turned out to be helpful for researchers. As the birds made their …
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