"Santa has taken to the air, but not in his traditional mode of transport. Here, he rides on the back of a Frigatebird, with a banner streaming out behind him, announcing tidings of the festive season.
"In the other design, a Frigatebird and a Red Crab ferry a payload of presents in a hot-air balloon, while Christmas Island can be seen far below in the blue waters of the Indian Ocean, " is how StampNews.com describe them
According to Wikipedia, "The Territory of Christmas Island is a territory of Australia in the Indian Ocean. It has a population of 2,072 residents... It is called Christmas Island because it was discovered on Christmas Day."