White-throated Kingfisher - Halcyon smyrnensis, Avissawella, Sri Lanka.

I saw this bird guarding it's nest built into a cavity in a stone wall. It would chase away any predators with its loud cry. I have seen the parents darting and pecking a large iguanascreaming all the while. The iguana which had a taste for birds eggs beat a hasty retreat in the face of the attack.