Christmas Island Flag
 
Flag Description:
territorial flag; divided diagonally from upper hoist to lower fly; the upper triangle is green with a yellow image of the Golden Bosun Bird superimposed; the lower triangle is blue with the Southern Cross constellation, representing Australia, superimposed; a centered yellow disk displays a green map of the island the flag of Australia is used for official purposes
note: the flag of Australia is used for official purposes

 

 

 

 

Source: CIA The World Factbook