The fork-tailed sunbird

(Aethopyga christinae) These small birds, with decurved bill, call a soft and frequent "zwink-zwink" and a metallic trill. Residents of Hong Kong, they are common and wide spread. They breed between April and June, eventually forming a ball of grass into a nest up in the trees. They can also be found on the most common postage stamp of Hong Kong.

Go to link