How large is Montague Island?
Montague Island (Australia)
Kikuyu grass is a major weed on the island.  Originally introduced in the early 19th century to help feed the animals kept by the lighthouse keepers and their families, it has spread to cover most of the south island.  To control it, NPWS officers poison a section, then burn it, before replanting with help from volunteers.  In the less accessible areas of the northern and eastern parts, an aerial spraying program is used to manage the kikuyu where it infests shearwater breeding sites.  The kikuyu is a barrier for the shearwaters and penguins who cannot penetrate it to move or to burrow. Various native species are used to replant areas after the kikuyu grass has been controlled.