From other website
NORTH
1. Yishun blk 618 (~15 big leaves for $1)
2. Opp Ahmad Ibrahim Sec Sch in Yishun
3. Yishun Park
4. Seletar West Farmway 1, Straits Aquarium
5. Seletar West Farmway 3, Just outside a fish farm
6. Near Marsiling MRT, at the start of highway beside the traffic light
7. Sembawang Park (near jetty; old Ski Place)
8. Sembawang Road, at the bungalows
9. Sembawang Air Base, Toranto Road
10. Woodlands St 82, field beside Woodlands North Plaza blk 883
11. Woodlands Drive 75, Blocks 689 A - F
12. Woodlands Ave 4 (opp Evergreen Pri Sch)
SOUTH
1. Henderson Industrial Park
2. Clementi Florist and Aquarium, blk 328 (20+ leaves for $1)
3. The stretch from Newton MRT
4. Alexandra TechnoPark Tower A (beside Hitach Service Centre), along the fence between Tower A and Flora Nursery
5. Coronation Road West, at the start of round-about
6. Outside Jin Tai Sec Sch field, along the main road
7. Opp Shell petrol station at Science Park II (near NUS)
8. Lower Delta Road, beside the bus stop num 14029 (opp blk 105)
9. Outside SGH, bus stop num 10051 (near blk 149 and Silat Rd Sikh Gurdwara temple)
10. Warwick Road, towards Normanton estate, left on the field
11. Margaret Drive, at the end joining Tanglin Road near Masjid Jamae Queenstown mosque
12. Carpark opp Seah Im Food Centre (near Harbourfront Bus Interchange)
13. Jalan Rumah Tinggi, towards bus depot
14. Labrador Park, near the jetty
15. West Coast Road junction from flyover to Clementi and West Coast Plaza
16. Jalan Bukit Merah (in front of blk 146; outside LFS near ABC Brickworks Hawker Center)
17. Along Waterloo St and Middle Road, beside My Secret Garden restaurant
18. Car park next to Pasir Panjang Park (near Pasir Panjang Food Court)
EAST
1. McDonalds at East Coast (diagonally in front of Beach Hut Cafe beside the cycling track)
2. Opp East Coast CC
3. East Coast, Pasir Ris Peoples Association Chalet near the bicycle track and beach
4. Beside East Coast Seafood Centre, just in front of the public toilet
5. Marine Cove, East Coast Coffee Bean
6. Changi Jetty
7. Pasir Ris Drive 1, paypond carpark
8. Pasir Ris Park
9. Whole stretch of Duman Road beside Tanjong Katong Road (both roadsides)
10. Outside Tanjong Katong Girls Sch side gate
11. Upper Changi Road
12. PIE between Bedok Reservoir and Eunos
13. The stretch from Paya Lebar MRT to Eunos MRT
14. Changi Road (in front of Eunos MRT; before Haig Road Food Centre and Market)
15. Temesek Poly, next to Engineering Sch first canteen
16. The stretch of Mountbatten Road
17. Kallang River
18. Kallang Squash and Tennis Centre
19. Upper Serangoon Road, Bidadari Muslim Cemetery
20. Beside blk 209 Serangoon Central, near bus stop num B63141 (facing Serangoon stadium)
21. Pasir Ris, Lorong Halus
22. New Geylang Market near Eunos MRT (opp Malay Village)
23. Near Bedok CC
24. Along Geylang Serai
25. Joo Seng Road, Joo Seng Warehouse main car park entrance
26. Bedok Reservior
27. Jalan Kayu, before Seletar West Farmway 4, at Uncle Seng farm
28. Around Rivervale Pri Sch in Sengkang
29. Paya Lebar, along Kim Chuan Road
30. Along Upper Paya Lebar off the T-junction of Lorong Ah Soo (near Paya Lebar Methodist Girls Sch)
31. Ponggol Road (SLE exit) towards the Ponggol Field junction
32. Empty field at Yo Chu Kang Road opp Pei Hwa Sec Sch before entering Hougang
WEST
1. NTU (beside Canteen 2; near Hall 7, entrance to Safti; diagonally opp Hall 11
2. Lim Chu Kang fish farms Lane 9 and Lane 9A (straight right to the end from Lane 6C)
3. 100 Sungei Tengah
4. Opp Tractor Road (opp Jurong Bird Park on the other side of AYE/Jalan Ahmad Ibrahim)
5. Jalan Terusan (near Jurong Port) at the traffic junction
6. Shipyard Road (both roadsides)
7. Tanjong Kling Road (both roadsides)
8. Jalan Buroh Road (both roadsides)
9. Along Jalan Ahmad Ibrahim, bus stop num B06
10. Stretch of Jurong East St 32 (both roadsides)
11. Jurong East Ave1 (both roadsides)
CENTRAL
1. Upper and Lower Pierce Reservoir
2. Bukit Batok East Ave 2, along canal
3. Bukit Batok East Ave 3, centre of the roads
4. Bukit Batok East Ave 5, Regent Heights Condo
5. Along the MRT track of about 50m before the Bouna Vista MRT
6. Hillview Ave (in front of The Petals condo)
7. North Buona Vista Road near Holland Road (opp blk 17, bus stop num B02)
8. Toa Payoh Lorong 4, inside National Semiconductor
9. Bus stop directly opposite NJC
10. Ang Mo Kio North Park (near the area where the singing birds' owners gather)
11. Ang Mo Kio Town Garden East (beside Ang Mo Kio MRT)
12. Ang Mo Kio Town Garden West (opp Ang Mo Kio Library)
13. Ang Mo Kio Ave 3 Park, along Ave 3 before ANg Mo Kio Central Flyover
14. Underpass near Ang Mo Kio St 54 to Serangoon Gardens
15. Toa Payoh, HDB blocks beside General Magnetics and ST Micro Electronics
16. Singapore Zoo, beside Camel & Sun Bear area
17. Railway track at road between Holland Village and Ghim Moh
18. Around Guangyang Sec Sch
19. MINDEF canteen
20. Jalan Minggu, facing Sin Ming Plaza
21. Bishan Park (beginning of the walkway, in the middle of Bishan MRT and Ang Mo Kio MRT; near the golf range; jogging track next to the herbal garden seen from the main road at the junction of Bishan Road and Ang Mo Kio Ave 1)
22. Chestnut Ave, just before the mountain biking trail (Zhenghua Park)
23. Along Upper Bukit Timah Road, bus stop num B018