Although Christmas in Australia is celebrated during the Southern Hemisphere summer, many Northern Hemisphere traditions are observed in Australia – families and friends exchange Christmas cards and gifts and gather for Christmas dinners; sing songs about snow and sleighbells; decorate Christmas trees; and tell stories of Santa Claus. Nevertheless, local adaptations have arisen – large open-air carol concerts are conducted on summer evenings before Christmas – such as the Carols by Candlelight in Melbourne and Sydney's Carols in the Domain. The Christmas song "Six White Boomers", by Rolf Harris, tells of Santa undertaking his flight around Australia hauled by six white-boomer kangaroos in place of reindeer. Christian carols such as "Three Drovers" or "Christmas Day" by John Wheeler and William G. James place the hymns of praise firmly in an Australian context of warm, dry Christmas winds and red dust. Although a hot roast dinner remains a favourite Christmas meal, the summer temperatures can tempt some Australians toward the nearest watercourses to cool down between feasts. It is a tradition for international visitors to gather "en masse" at Sydney's Bondi Beach on Christmas Day.