As I was leaving the office, I glanced at the roof of our 5 story building. At first, I thought it was a bird. I had to zoom in to discover it wasn't! (There were originally two, but I cloned one out for a better effect - I think they were repairing the security camera)
Looks very much like a male Hooded Peeper. They tend to gather on roof tops, but in some areas they seem to prefer back yards and are known to look at their reflections in windows, hahaha...sorry!! Fun shot Lin.
See my comment on your shot!
@snaggy