Journal of Parasite Science. (J. Parasite Sci.) Vol. 2, No.2, September 2018 Identification of Worm Eggs in Faeces of Egrets (Egretta sp.) in Surabaya 51 Identification of Worm Eggs in Faeces of Egrets (Egretta sp.) in Surabaya Identifikasi Telur Cacing pada Feses Egrets (Egretta sp.) di Surabaya 1) Akbar Haryo Widhi Trismiharto, 2) Suzanita Utama, 3) Koesnoto Soepranianondo, 4) Djoko Poetranto, 5) Setiawan Koesdarto, 5) Muchammad Yunus 1) Student, 2) Department of Veterinary Reproduction, 3) Department of Animal Husbandry 4) Department of Veterinary Clincal, 5) Department of Veterinary Parasitology. Faculty of Veterinary Medicine, Universitas Airlangga. Abstract The aim of this research was to identify worm eggs species that infected Egrets in Surabaya. A total of 40 samples were taken and faecal examination was conducted in the Laboratory by means of native, sedimentation, and floating methods, In floating method saturated brown sugar solution was used as floating media because brown sugar solution was faster in floating worm eggs. Then further examination of the worm eggs species were matched by microscopic taxonomy and textbook comparison observation. Eggs of three classes of helmints, Trematode, Cestode, and Nematode were found in faeces of Egrets in Surabaya. Species of the Nematode eggs found were Ascaris sp., Ascaridia galli, , Capillaria sp., Toxocara cati. Species of Cestode class egg found were Raillietina sp, from Trematode class were Echinostoma revolutum. Key words: Worms Eggs, Egretta sp., Brown sugar. Introduction Indonesia is a maritime country, with the geographical location exactly on the the equator line. This country has more than 17,500 large and small islands, has more than 42 types of terrestrial and five types marine ecosystems very unique. The diversity and uniqueness of the ecosystem has made awarded in term of natural resources. There is no other country which has natural conditions such as Indonesia. Indonesia is the richest country in the world in terms of biodiversity. World Resource Institute, IUCN, dan UNED (1995) described that Indonesia has up to 25% various species in the world when its land area is only 1.3% of the total mainland in the world (Sukara 2008). This is due to the geographical location of Indonesia that is strategic because it is located between two continents, Asia and Australia and between two oceans, the Hindia ocean and the Pacific as well as a meeting between two impor- tant biogeographic region that is Oriental and Australian region. This conditions made Indonesia the world's most unique area (Sukara, 2008). These unique conditions made Indonesia rich in term of palnts and animals. Indonesia has a lot of diversity in various kind of animal species or wildlife, one of them is the kinds of birds. The number of bird species in Indonesia account for 18% from the total of birds species in the world (1598). Indonesia also became a part of the flight paths of 149 species migratory birds (Sukmantoro et al., 2007). Migratory birds are birds that do the flying activity from breeding location to non breeding location that occur every year. Migration of these birds as a form of response due to the extreme climate change. Several types of habitat that support migratory birds are the mountains, swamps, coastal waters, lakes, mangroves and mudflats because its providing various sources of food (Howes et al., 2003). The time when migratory birds start migrating to the southern hemisphere are from October to December. Location that will be visited by migratory birds to find food are the mangrove, beach, mudflats, rice field and swamp.