Birds may face threats from various factors. In a highly urbanised environment like ours, glass windows and reflective surfaces pose a threat too. A lot of research is being carried out on the impact of this, and there are ways to mitigate. We do come across several cases of window collisions, and fortunately some of the birds do pull through following the members of public getting help, incubation and right way of handling. Unfortunately, some do not make it, like these birds in the picture. Thanks to our callers for trying their best to get help for these birds who go into a period of shock after knocking onto the glass. But for those unfortunate ones, who pass away, please do report your sightings at http://tinyurl.com/SGBirdCrash to contribute to an ongoing survey by the Nature Society Singapore.
I’ve contacted David Tan, who received these carcasses, for further information. The heron on the right, which was found at Sentosa Cove, is thought to be a pond heron (most likely Chinese Pond Heron) (Ardeola bacchus). The carcass in the lower left of the photo is a female Asian Fairy Bluebird (Irena puella), found at Asia Square Tower. Unfortunately, there is no locality data for the Black-backed Kingfisher (Ceyx erithacus) in the upper left.