Singapore will have four new green corridors to facilitate the movement of animals between green spaces. And the National Parks Board is roping in the community to create these linkages, called Nature Ways, by growing bird- and butterfly-attracting plants in homes, along roads and within buildings.

A community initiative to create the Kheam Hock Nature Way was launched yesterday, with Minister for National Development Khaw Boon Wan joining residents to plant a Nipis Kulit tree, a native bird-attracting tree.

This Nature Way will link two biodiversity-rich areas, the Central Catchment Nature Reserve and Singapore Botanic Gardens. The three other Nature Ways will be at Admiralty, Tampines and Yishun. By 2015, more than 60km of these green linkages will be planted.

In a blog post today, Minister Khaw wrote that at yesterday's launch, he met people from all walks of life with a common passion to make Singapore even greener.

"After 50 years, our greening campaign has entered its next phase of an extensive ground-up effort, with Singaporeans playing critical role in helping to shape our City in a Garden," he wrote.