<p>Nature Society Singapore (NSS) runs a set of special interest groups — Bird, Butterfly, Marine, Plant and Vertebrate — where member-volunteers take part in biodiversity surveys, nature walks, conservation outings and public education. Student members can also join the Every Singaporean a Naturalist programme.</p><ul><li>Open to NSS members; student membership is available at a reduced rate</li><li>Each interest group sets its own calendar of surveys, rambles and conservation events</li><li>Activities include birdwatching, butterfly monitoring, marine clean-ups, plant surveys and wildlife study</li><li>The Every Singaporean a Naturalist initiative is targeted at schools and young learners</li><li>Rolling intake — members join groups through the NSS website</li></ul><p>Prospective participants join as NSS members via nss.org.sg and opt into one or more interest groups.</p>