After two months, the two mice on the island had become 14. After five months, 68 mice were living there.
What makes this achievement more remarkable is that the adult male was released at the northern end of the island, while the female was released at the southern end of the island; a distance of 400 metres apart.
How two mice conquered an island
In an amazing experiment, two mice took just five months to dominate a new land
http://www.bbc.com/earth/story/20150701 ... -an-island