Zebra finches (Poephila guttata) in rubber vine (Cryptostegia grandiflora) on the Flinders River, Gulf of Carpentaria, Queensland, Australia. Zebra finches are adaptable and able to use the weed's cover in their open grassland habitat, but rubber vine is an invasive woody climber, smothering riparian forests and woodlands as a vine, and open ground as a shrub. The adaptability of the zebra finch has made it a popular aviary bird, and it is used in scientific studies.