A study on activity of the Little Egret (Egretta garzetta) was conducted in Serangan Island, southern part ofBali between May and June 2016. The aim of this study was to find out daily activities of these birds in threedifferent habitats: lagoons, mangrove forests and muddy beaches. Preliminary observation was conducted throughAd Libitum sampling, while the sample on the main study was through a scan sampling method. The data wascollected through recording activities of the egret on interval of 30 seconds within two hours. The data collectionwas undertaken in three periods: morning, afternoon and evening. The colony of observed egrets was chosenrandomly across habitats and time periods. Data collected were descriptively or quantitatively analysed. Results ofthe study showed that from the three observation periods, the egret activities were dominated by the sameactivities, that was foraging, but with different magnitudes or percentages. In contrast, activities with the lowestpercentage was agonistic. In the lagoon area, the percentage of the activity of foraging was as follows: in themorning it was 50.15%, in the afternoon 46,62%, and in the evening 49,63%. In mangrove areas the percentage offoraging activities was as follows: in the morning it was 52.46%, in the afternoon 41.60%, and in the evening50.83%. The percentage of foraging activities in muddy beaches was as follows: in the morning it was 50.18%, inthe afternoon 42.70%, and in the evening 49,65%.Keywords : little egret, Serangan Island, daily activities, habitat, Bali

Kawasan Desa Gunaksa dan beberapa wilayah di sekitarnya di Kabupaten Klungkung, Bali memiliki potensi untuk dikembangkan sebagai salah satu lokasi ekowisata bertaraf international di Indonesia. Tujuan penelitian ini adalah untuk mengetahui keanekaragaman dan status jenis burung (Avifauna) di Desa Gunaksa dan beberapa wilayah di sekitarnya. Metode yang digunakan adalah Metode Jelajah (Cruise method) yaitu melakukan penjelajahan jalur yang dapat digunakan untuk mewakili berbagai tipe ekosistem di kawasan penelitian. Hasil penelitian menunjukkan telah diperoleh sebanyak 46 jenis burung dengan nilai Indeks Kelimpahan Relatif (IKR) tertinggi diperoleh oleh jenis Kuntul Kerbau (Bubulcus ibis) sebesar 9.50% (Dominan). Indeks Ekologi jenis burung menunjukkan kategori Tinggi baik pada Indeks Keanekaragaman (H’) (3,16), Indeks kekayaan (R) (7,15), dan Indeks kemerataan (E) (1,87). Jenis Elang tikus, Cerek Jawa, Cikalang Christmas, dan Kipasan Belang termasuk Jenis yang dilindungi berdasarkan Peraturan Menteri Lingkungan Hidup dan Kehutanan Republik Indonesia Nomor p.106/menlhk/setjen/kum.1/12/2018, sedangkan Cikalang Christmass yang masuk dalam daftar IUCN RedList dengan kategori Critis (CR). Diperlukan upaya konservasi dan partisipasi dari Lembaga pemerintah, akademisi, praktisi, dan masyarakat untuk dapat meningkatkan kepedulian lingkungan di Desa Gunaksa dan beberapa wilayah di sekitarnya demi keberlanjutan avifauna di Kawasan tersebut.

Aquatic organisms or nekton have an important role in supporting the stability of the aquatic environment and human life. This study aims to determine the nekton type community, ecological index, and their conservation status in the Unda River area and around Jumpai Beach, Klungkung Regency, Bali. The study was conducted in July - August 2020. The study was conducted in 2 communities, namely Macrozoobenthos and Nekton. Macrozoobenthos samples were collected using the quadratic method in the Jumpai Beach area and the direct observation method along the Unda River. Nekton communities are collected through primary data using "survey methods" and secondary data through interviews with fishermen and local communities. The ecological index data were analyzed using the Shannon-Weiner diversity index (H'), dominance index (C), and uniformity index (E), while the data on Nekton type and conservation status were analyzed descriptively. The nekton species community in the waters of the Unda River and Jumpai Beach areas was obtained as many as 26 species in 21 families which were dominated by Kepala Timah (Aplocheilus panchax) and sepat rawa (Trichogaster trichopterus), while Nautica sp for the Macrozoobenthos community. The ecological index of the aquatic community is the Shannon-Weiner Diversity Index (H') value of 2.98 (moderate), the wealth index (R) of 3.95 (moderate), and the evenness index (E) of 1.21. (High). The highest percentage ratio of nekton communities was obtained by the Macrozoobenthos community, namely 53%, while the nekton species was 46%. Conservation status shows that 13 species are included in the LC (Least Concern) category, 12 species are included in the NE (Not Evaluated) category, and 1 species are included in the VU (Vulnerable) category.