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Location Taiwan (China), Penghu
Central coordinates 119o 18.00' East  23o 19.00' North
IBA criteria A4i, A4iii
Area 36 ha
Altitude 0 - 79m
Year of IBA assessment 2004

Chinese Wild Bird Federation



Site description Extent of this site: consists of Big and Small Cat Islets. Cat Islets are in the southwestern seas of the Penghu Archipelago; they are 50 km to Makung, 20 km northwest of Chimei Islet; and 25 km west-southwest of Wangan Islet. The peak of Big Cat Islet, in the center of the islet, is 79 m in elevation. It is also the highest peak of the Penghu Archipelago. Small Cat Islet is 100 m to the southeast of Big Cat Islet, with a peak of 50 m. Both islets are named after their cat-like landforms. Surrounded by steep rocky cliffs, the islets are difficult for humans to climb up on. Totally 19 species in 12 families of plants have been recorded here. Chenopodium virgatum is the dominant ground cover on both Big and Small Cat Islets in summer; Silky-haired Crab Grass Digitaria serricea and Formosan Peacock-plume Chloris formosana are the dominant species in winter. The major bird species in Cat Islets are Common Noddy and Bridled Tern, which account for over 95% of all birds.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bridled Tern Onychoprion anaethetus breeding  1987-1997  4,000-8,000 individuals  good  A4i  Least Concern 
A4iii Species group - waterbirds unknown  1987  20,000 individuals  unknown  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Cat-Islet Wildlife Refuge 10 protected area contained by site 10  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Sea   major
Coastline   major

Other biodiversity • Nineteen species of plants in 12 families have been recorded.

Protection status PA

References • Lin, C. S. et at. 1991. Geology and Landforms of the Penghu Archipelago. Taiwan Provincial Education Board. • Lin, C. H. et al. 1997. Penghu Cat Islet Seabird Refuge. Penghu County Government. • Penghu County Government. 1997. Revision of Penghu Cat Islet Seabird Refuge Plan. Penghu County Government. • Department of Zoology, National Taiwan University. 1999. Wildlife Refuges in Taiwan. Council of Agriculture, Executive Yuan. • Chang, T. G. Report on the Investigation of the Avian Resources of Penghu Cat islet Seabird Refuge. Penghu County Government. • Jeng, C. S. 1999. Avian Resources of the Penghu Archipelago. Penghu County Government.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Cat Islet Seabird Refuge, Penghu County Refuge. Downloaded from http://www.birdlife.org on 16/09/2014

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