This is a common bird Kookaburra around where I live and native to Australia only I think, especially early morning at sunrise and late sunset. It is also called a Jackass as well, referred to in the Aboriginal Story Tellings and has to do with announcing the rise and fall of the sun. It is said that if they stoped their laughing then the sun would diasppear according to the Story Tellings. This was really one in a series of grab shots that I got, I think he had banged into one of my Windows as it has heat reflective film on it to reduce heat in the bedroom and front room below and might have thought he saw another Kookaburra and attacked it. They usually live in a communal type of grouping in the local bushland.
Does this now qualify me as a BirdNerd Too.