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Butterfly Survey


It is the first team of butterfly surveyors formed by the general public in Hong Kong since 2008. They continuously visit many local butterfly hotspots to record the number of butterfly species and related ecological data.

Butterfly surveyors are recruited once a year, providing substantial human resources for butterfly survey over the long-term. Participants have to receive training and pass an exam in order to become butterfly surveyors. Currently there are over 300 qualified surveyors who monitor 12 butterfly hotspots, including: San Tau (Tung Chung), Luk Keng (Fanling), Wu Kau Tang (Tai Po), She Shan and Ng Tung Chai (Lam Tsuen, Tai Po) , Yuen Tun Ha (Tai Po) , Yung Shue O and Sham Chung (Sai Kung) , Sha Tau Kok, Pak Sha O and Lai Chi Chong (Sai Kung), Mui Wo (Lantau Island), Ho Sheung Heung - Long Valley - Lok Ma Chau, Tai Lam Country Park (Kam Tin) and Lung Kwu Tan (Tuen Mun).

All the survey data is uploaded to Hong Kong Butterfly Net, so members of the public can monitor conditions of butterfly hotspots together.

Butterfly surveyors are recruited in March and April every year. Please go to〈We Love Butterflies Net〉 for more details.

2018
  • Annual survey included 12 sites. Survey in progress.
2017
  • Annual survey included 11 sites, 181 species of butterflies were recorded, accounting for 68% of the butterfly species in Hong Kong. They included 26 very rare (VR) and 30 rare (R) species*.
2016
  • Annual survey included 10 sites, 197 species of butterflies were recorded, accounting for 74% of the butterfly species in Hong Kong. They included 36 very rare (VR) and 37 rare (R) species*.
  • During May to July, 3 surveys were conducted at Sha Lo Wan, San Shek Wan and Shum Wat on Lantau. A total of 84 butterfly species were recorded. A stable population of Common Archduke (Lexias pardalis), which was only recently discovered in Hong Kong, was found.
2015
  • Annual survey included 10 sites, 174 species of butterflies were recorded, accounting for 65% of the butterfly species in Hong Kong. They included 23 very rare (VR) and 29 rare (R) species*.
  • In January, a notable butterfly species – European Beak (Libythea celtis), was found at Sha Tau Kok. This was the first Hong Kong record of the species.
2014
  • Annual survey included 9 sites, 173 species of butterflies were recorded, accounting for 65% of the butterfly species in Hong Kong. They included 20 very rare (VR) and 31 rare (R) species*.
2013
  • Annual survey included 8 sites, 171 species of butterflies were recorded, accounting for 64% of the butterfly species in Hong Kong. They included 20 very rare (VR) and 29 rare (R) species*.
  • In July, Hooked Oak Blue (Arhopala paramuta), a species that had not been recorded in Hong Kong for 32 years, was found at Sha Tau Kok.
  • In February, the surveyors discovered illegal excavation work at the Ta Tit Yan butterfly hotspot.
2012
  • Annual survey included 7 sites, 183 species of butterflies were recorded, accounting for 68% of the butterfly species in Hong Kong. They included 28 very rare (VR) and 30 rare (R) species*.
2011
  • Annual survey included 6 sites, 166 species of butterflies were recorded, accounting for 62% of the butterfly species in Hong Kong. They included 22 very rare (VR) and 27 rare (R) species*.
  • In October, ecological vandalism was discovered at butterfly hotspot - Yuen Tun Ha.
2010
  • Annual survey included 5 sites, 151 species of butterflies were recorded, accounting for 56% of the butterfly species in Hong Kong. They included 15 very rare (VR) and 21 rare (R) species*.
  • In July, ecological vandalism was discovered at butterfly hotspot - Yuen Tun Ha.
2009
  • Annual survey included 4 sites, 142 species of butterflies were recorded, accounting for 53% of the butterfly species in Hong Kong. They included 12 very rare (VR) and 18 rare (R) species*.
2008
  • Commencement of “Butterfly Surveyor” community survey programme. Annual survey starts in June/July each year till May/June the following year.
  • First year survey covered 3 sites, 128 species of butterflies were recorded, accounting for 48% of the butterfly species in Hong Kong. They included 11 very rare (VR) and 13 rare (R) species*.
  • In October, ecological vandalism was discovered at butterfly hotspot - Luk Keng.
2007
2006
2005
2004
*Annual survey starts in June/July each year till May/June the following year. Species status adopted from Agriculture, Fisheries and Conservation Department - Hong Kong Biodiversity Database (2018)
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