Nature walk. We went back to the Fort MacRitchie reservoir today, in an effort to check out the tree-top canopy walkway we recently learned they've set up. Unfortunately, the tree-top walk was about a 4.5 km walk in, so we only just walked some of the other nature trails. New bird: the terminally drab Olive-Winged Bulbul. Also saw another Greater Racquet-Tailed Drongo, some swifts, a kingfisher, a (water?) monitor lizard, a lot of turtles, and a lot of these guys. They weren't that happy to see us, it seems; they kept dropping sticks on us. Just one would've been a coincidence; after the third, we figured we ought to move on.