I have been to this bird reserve again and again, as I mentioned earlier. On a subsequent visit, I also saw swifts, especially around dusk, when they are at their most active, since this is just before they return to their nests among the reeds on the far-side of the water bodies where they fly low, snapping up low-flying insects. I also had the fortune of seeing a bittern, making a booming sound as it waded among the reeds. Bitterns are not easy to spot as they camouflage very effectively.