Invasive species have the potential to provide a suitable habitat or food source for other organisms. In areas where a native has become extinct or reached a point that it cannot be restored, non-native species can fill their role. An example of this is the Tamarisk, a non-native woody plant, and the Southwestern Willow Flycatcher, an endangered bird. 75% of Southwestern Willow Flycatchers were found to nest in these plants and their success was the same as the flycatchers that had nested in native plants. The removal of Tamarisk would be detrimental to Southwestern Willow Flycatcher as their native nesting sites are unable to be restored. The California clapper rail (Rallus longirostris obsoletus), had grown partial to the new hybrid grass of Spartina alterniflora/Spartina foliosa (invasive). The new grass grew more densely than the local version and didn't die back during the winter, providing better cover and nesting habitat for the secretive bird. During the 1990s, as the hybrid spread, the rail population had soared.