Others
Snail
Gecko
References
Koh, K. H. 1989. A guide to common Singapore Spiders. Singapore Science Centre, Singapore, pp 1-160.
Murphy, F. & J. Murphy, 2000. An introduction to the spiders of South East Asia, with notes on all the genera. Malaysian Nature Society, Kuala Lumpur, Malaysia, pp 1-625, plates. 1-32.
This is the second time that I joined Kim Seng for the bird census. On 25th March this year, during the Annual Bird Census, I did learn a lot from him by coming along for the 3 hour walk. This year I even learnt more as we were lucky enough to sight a very good spot which is created by several naturally fallen trees. During about 20 minute stop there, we found more than 10 species of forest birds actively moving around and singing, including some that I have never seen before, namely the Asian Fairy-Bluebird, Red-Crowed Barbet, Chestnut-Bellied Malkoha and Red-Eyed Bulbul, etc. Kim Seng explained to me and Paul, the other assistant for the census, the various songs and their responsible singers. It's really a very nice experience that you hear a bird song and see the bird at the same time! In total, we encountered 35 species, with 184 individuals of birds. There are two black-naped oriole and several Yellow-vented Bulbul there also, which according to Kim Seng, is not a good sign for the habitat. Both species are normally found at open country area.
During the census, we came across a Blue Malayan Coral Snake. It was slowly moving from one side of the trail to the other. That gave me a sufficent time to take photos for it. But as it is so famous for its venomous bite, I dare not to go too close to it for a closeup. We also saw quite a number of dragonfly and damselfly species. So after the census, I spend another 2 hours walked again along the same trail to survey the dragonfly and damselfly. I tried to take photography records for most of the species. But several species were in limited number and located at some distance beyond my camera's reach. A painted bronzeback snake and a comon Sun Skink were also recorded. The following list is based on direct observation and photographs consulted with the guidebooks by Orr (2003, 2005).
Odonata species list for the day
1. Ceriagrion cerinorubellum (Brauer, 1865), common
2. Vestalis amoena (Hagen, 1853), common
3. Aciosoma panorpoides Rambur, 1842, common
4. Ictinogomphus decoratus melaenops (Selys, 1858), common
5. Neurothemis fluctuans (Fabricius, 1793), common
6. Orchithemis pulcherrima Brauer, 1878, blue morph, common
7. Brachydiplax chalybea Brauer, 1868, common
8. Orthetrum sabina (Drury, 1773), common
9. Orthetrum chrysis (Selys, 1891) male, commom
10. Rhyothemis phyllis (Sulzer, 1776), common
11. Rhyothemis triangularis Kirby, 1889, uncommon
12. Rhyothemis cf obsolescens Kirby, 1889, uncommon
13. Trithemis aurora (Burmeister, 1839), common
14. Tyriobapta torrida Kirby, 1889, common
Orchithemis pulcherrima, orange form
Orchithemis pulcherrima, dark form
Tyriobapta torrida
Orchithemis pruinans
Vestalis amoena
References
Lim, K. K P & F. L. K. Lim, 1992. A guide to the amphibians and reptiles of Singapore. Singapore Science Centre, Singapore, pp1-160.
Lim, K. S. & Gardner, D. C., 1997. Bird, an Illustrated field guide to the birds of Singapore. Sun Tree Publishing, Singapore, pp 1-210.
Orr, A. G., 2005. Dragonflies of Peninsular Malaysia and Singapore. Natural History Publications (Borneo), Kata Kinabalu, pp. 1-125.
Orr, A. G., 2003. A guide to the dragonflies of Borneo, their identification and biology. Natural History Publications (Borneo), Kota Kinabalu, pp. 1-195.
Cheong, L. F., Checklist of Odonata in Singapore. (unpublished)
The Chek Jawa Wetland was officially launched this morning. From now on, all visitors can come to visit Chek Jawa from 8am to 6pm, seven days a week, on their own. It's a raining day, and the launch have to be started at 8:30am due to the restricted tidal timing, as there will be a guided natural walk after the launch. Still, there was a large number of people, include government officers, volunteers and public visitors turn up. 
Singaporean are getting more and more enthusiastic and concern of the conservation of their nature and biodiversity. As to promote the visit of Chek Jawa Wetland, A 1.1 km boardwalk has been built along the coast. A gallery was set up on the previous British Colony House No.1 in Pulau Ubin to dispaly the diversity of life in Chek Jawa.
. The second half of the boardwalk is dominated by mangrove habitats. Here, mangrove fauna is not so rich as compared to Sungei Buloh and many of other mangrove sites in Singapore. But still, we were able to see and hear several species of birds during the one hour walk, namely straw-headed bulbul, common tailorbird, ashy tailorbird, common Iora, olive-backed sunbird, pied fantail and oriental magpie-robin. We even saw a large size of banded kraits (snake) moving slowly at the back mangrove. According to Lim and Lim (1992), "The kraits have seldom been encourtered in Singapore". 
Between the sand bar and mangrove, there is a sanddy-mudflat. Here, numerous fiddle crabs (Uca sp), sand bubbler crab (Scopimera sp) include several different species moving, waving, and fighting (or playing). Many individuals of a small mud-skipper caught visitor's eyes as they display a bizarre behavior. The fish keeps continuously jumping up and down to a distance about twice of its body length in a vertical position. No sure what they were doing, probably some kind of territorial display.
After the walk, I followed the local mangrove expert, Dr. Jean Yong and his students, together with Ali from Pulau Ubin station to other mangrove areas in Pulau Ubin to continue our adventure. One of locally endangered species of mangrove tree, currently has only very limited individuals in Singapore, and half of them are growing in the Pulau Ubin. Jean wanted to check the current situation of those trees. We penetrated slowly into a dense back mangrove forest, back and forth several times. 
