Laughing Kookaburra
Dacelo novaeguineae

Laughing Kookaburras are the biggest of all the Kingfishers and are native to Australia. They belong to the 'forest kingfisher' group and live in wooded areas and parks. It's probably the best-known of Australian birds and the laugh they make is quite something to hear.
 

1: Bluegum Walk, Hornsby, 30/01/2010.
2-3: Centennial Park, Sydney, 26/09/2009.