Traces of rare butterfly species found in Hong Kong for first time in 13 years

Butterfly surveyor finds eggs of club beak at Lui Kung Tin in Yuen Long district.

Traces of rare butterfly species found in Hong Kong for first time in 13 years

Traces of rare butterfly species found in Hong Kong for first time in 13 years

Traces of rare butterfly species found in Hong Kong for first time in 13 years

Traces of rare butterfly species found in Hong Kong for first time in 13 years

Traces of rare butterfly species found in Hong Kong for first time in 13 years