1 / 4   The annual bird singing competition held on Tuesday in Thailand drew thousands of spectators from Southeast Asia. Over 1,600 birds from Thailand, Malaysia and Singapore took part in the annual contest where competitors pitch their singing birds against other. /VCG Photo

2 / 4   Birds are placed in ornate bamboo cages which are hoisted onto hooks suspended three meters high above the ground on a metal grid. When the contest begins, the cages are lifted high in the air. /VCG Photo

3 / 4   Judges base their decisions on the bird's melody, pitch, clarity, stamina, modulation and volume, but also the quantity of songs. /VCG Photo

4 / 4   The winning bird is the one that sings the highest number of times in a given period. Good birds may trill as many as eight times in a round. Owners yell to encourage their birds and they will be awarded a cash prize if their little “contestant” emerges as the winner. /VCG Photo