Can you help me find a frog?

I am working on my next book, covering 380 Hong Kong species including mammals, reptiles, birds, some marine life, invertebrates, and of course amphibians, and I realise that I do not have a good photo of the famous: Romer's tree frog (Romerus romeri) This little - c.2cm and HK's smallest amphibian - is a native here as well as a small portion of Guangxi. Interestingly the frog has been recorded solely from four of the outlying islands in Hong Kong, namely Lantau Island, Lamma Island, Po Toi Island and Chek Lap Kok. So if you live there and know of a local population I would love an invitation to come and photograph them in situ. I will be available 16-17th and 19th of February. Simply email me info@wildcreatures.org

Romer's tree frog was named after John D. Romer, who first discovered it in a cave on Lamma Island in 1952. That population disappeared in 1953 due to the collapse of the cave. Once thought to be extinct, the frog was rediscovered on the island in 1984.