Ten thousand pigeons from more than 30 mainland cities and towns are to cloud the sky over Sha Tin in a $1 million ceremony to mark July 1. The homing pigeons, some from as far as Beijing - some 2,500 kilometres away - are charged with the task of sending the handover message back to their home towns. The birds will arrive in Hong Kong by train late next month to allow them several days to adapt to Hong Kong's weather before they fly off. Organiser Heung Yee Kuk has asked the Royal Pigeon Racing Association to help take care of the pigeons during their short stay in the territory. The massive pigeon-freeing ceremony will be held at the Sha Tin Sports Ground.