Bali Starling (Leucopsar rothschildi Stresemann, 1912) is endemic bird to the Bali Island. Since 1966, Bali Starling has been categoried as Critically Endangered by the IUCN Red List of Threatened Species, and the Indonesian Government Regulation No. 7 of 1999 on Preservation of Fauna and Flora. Conservation of Bali Starling has been done in the Bali Barat National Park, but has not succeeded yet. Therefore, starting in 2006 the conservation of the Bali Starling is also done in the Nusa Penida Islands, Klungkung Regency. To examine the successful of conservation of Bali Starling in Nusa Penida Islands, need the studies as follows: How is the distribution of Bali Starling? This research aims to study the success of conservation of Bali Starling in Nusa Penida Island. Specifically, the purpose of this research were to study distribution of Bali Starling. Materials and methods used in this research was known from questioned to the people in the area, and also conducted exploration. Distribution of Bali Starling in 2006 was only in three locations, and being expanded in 2015 there were at least in 12 locations. Keywords:     Bali Starling, Leucopsar rothschildi, Nusa Penida Island, Bali,distribution

Abstract. Sudaryanto FX, Pudyatmoko S, Djohan TS, Subagja J, Suana IW, Kalih LATTWS, Hardini J, Subagio J. 2020. Daily activity, diet, and habitat of Bali myna (Leucopsar rothschildi) in Nusa Penida, Bali, Indonesia. Biodiversitas 21: 4474-4482. Endemic Bali myna (Leucopsar rothschildi) has a very high risk of extinction in its natural habitat. Bali Barat National Park (BBNP) and other NGO's have conducted various conservation activities, such as breeding and release, community development, environmental improvement, and awareness program. Breeding and release have already been applied in Nusa Penida out of its original habitat. To support the conservation of Bali myna, basic ecological data are needed, eg. daily activities, habitat profile, home range, and interspecific interaction. This study aimed to meet the needs of these vegetation profiles. We collected data from 2013 to 2015. Daily activities were observed on a couple of Bali myna in a nest box at agroforestry area. Habitat profile was determined by analyzing vegetation at their foraging, nesting, and resting areas, using a quadrate plot of 20 x 20 m2. To estimate the home range, of the Bali myna, we recorded 700 points of perching of these birds, by using Global Positioning System, and analyzed using Convex Polygon Method. Their interaction with other animals was carried out at their foraging, nesting, and roosting areas. Daily activities of the Bali myna in Nusa Penida are predominantly recorded in agroforestry areas, so its home range is relatively narrow, at 3.9 ha. The food types of Bali myna in Nusa Penida were fruits, insects, and nectar flowers. Sucking on nectar flower is the first report here. The vegetation profile of nesting and foraging area for Bali myna consists of one layer of thick and dense canopy, while the vegetation profile of resting area is not too dense, which is composed of two canopy layers. Bali myna's interactions with other animals for competition, predation, and mutualistic symbiosis. These data are expected to be used to make decisions in order to conserve Bali myna in Nusa Penida.

Bali Starling (Leucopsar rothschildi Stresemann, 1912) is an endemic bird in Bali, which is categorized as critical (Critically endangered). Starting in 2006 Bali starling conservation efforts were also carried out in the Nusa Penida Islands. This study aims to study contribution of the customary village regulation (awig-awig) to the success of the conservation of Bali Starling in the Nusa Penida Islands. Methods used included calculation of the Bali starling population directly with concentrated methods and the awig-awig implementation in the community obtained using AHP (Analytical Hierarchy Process). Results of the study showed that the population of Bali Starling in 2006 was 49, while in 2015 there were 66 individuals. Awig-awig has been the most important alternative to protect Bali starling. The conclusion of this study is that the Bali Starling population is increasing, and the Nusa Penida Islands community has a perception, and good participation in the awig-awig who protect the Bali Starling.

The leptocephalus drift with sea currents and moving from spawning area into coastal area near mouth of Progo River. In the coastal area, leptocephalus metamorfosed into glass eel, after that glass eel migrated to river. The aims of this research were to estimate glass eels age and predict hatching dates. Glass eels sampled on new moon during Februari 2007–Mei 2009 at mouth of Progo River. Glass eel ages estimated using their otolith microstructure. Hatching dates predicted with back calculation of glass eels age. We collected 1.082 glass eels. The ages of glass eel at recruit ranged from 58 to 190 days, and divided into 5 age groups. Glass eels are migrated to river hatched on new moon from July to January. Glass eels are migrated to river during October–January hatched during July–October. Glass eels are migrated to river during February–Juny hatched during November – January.

In the development of cricket farming, important information in regard with cultivated method, type of crickets, feedstuff, density level, and it’s productivity is essential. The aim of this study was to evaluate the effects of different density level and rations on growth performace of three species of local crickets, i.e Gryllus bimaculatus De Geer, Gryllus mitratus Burn and Gryllus testaceus Walk. Three levels of box square density (500, 750 and 1000 cricket/box) and two levels of additional feed (mustard green and papaya leaves) were used as treatments. The results showed that the density level of approximately 1000 cricket/box had no significant influence on growth performance of the three species local crickets. Nevertheless, higher density level tended to increase mortality rate especially for G. bimaculatus (rate of mortality = 45.86%). The use of feed combination of formulated ration plus mustard green resulted in better growth performance and higher egg production compared to the combination of formulated ration plus papaya leaves.