![]() ![]() We located remnant populations of the CR yellow‐crested cockatoo and CR citron‐crested cockatoo and used remotely sensed socio‐ecological variables to explain why they avoided local extinction. A challenge with endangered species that have disappeared from most of their range is to identify the conditions that allow survival at just a few sites. Studies combining field and remotely sensed data, and examining false negative sites for beneficial location‐specific conditions, have broad application for the conservation of taxa with once‐large ranges. Some of these local influences add complexity to the task of conserving cockatoo strongholds, but also offer exciting possibilities for low‐cost conservation prescriptions tailored to individual sites. The examination of local conditions at ‘false negative’ sites (where cockatoos survived contrary to model predictions) showed that, particularly in recent years, cockatoo survival has been promoted by site‐specific protection due to traditional beliefs, NGO activities, dedicated individual residents and local topographic barriers. The relative importance of these factors changed little over time, but road density and human density became respectively more and less important in recent years. Sites retaining cockatoos had high proportions of tree cover, low road density and low human densities. Populations on Sulawesi and West Nusa Tenggara were more likely to become extinct than those on Sumba, Timor‐Leste and small remote islands. We compared socio‐ecological conditions such as forest cover and loss, human population density and infrastructure, and protected area status between the occupied and unoccupied sites, using ‘random forests’ within decreasing time intervals 1950–2015. Of 144 sites on 30 islands known to contain the species in 1950, only 76 on 27 islands did so in 2017–2019, with many of the other 68 experiencing extinctions between 19. citrinocristata have undergone catastrophic declines due to habitat loss and especially trapping, and are now extinct in much of their former range across Indonesia. The recently split yellow‐crested cockatoo Cacatua sulphurea and citron‐crested cockatoo C. With species decimated by trade, site‐specific trapping risk is hard to capture by remotely accessed predictors. The Sumba cockatoo population is now scattered in fragmented forests, and the Roti Island snake-necked turtle is highly likely to be extinct in the wild.Ī challenge with species that have disappeared from most of their range is to identify the correlates of local persistence. The study showed that the yellow-crested cockatoo could not be found in many areas. We also collected data on opportunistic surveys for searching the species from 2010 to 2021. We reviewed and compiled data from scientific papers, technical reports, unpublished reports, birding reports, and online sources. Unfortunately, they are listed on the red list International Union for Conservation of Nature (IUCN) Red List as critically endangered. Roti Island snake-necked turtle is often found in the village’s paddy fields or irrigation canals. Cockatoos are even considered a pest for local crops like corn and sorghum. All those species were common in the past. Due to uncontrolled poaching, the population of several native faunas has drastically decreased, such as the Yellow-crested cockatoo ( Cacatua sulphurea ), Sumba cockatoo ( Cacatua citrinocristata ), and Roti Island snake-necked turtle ( Chelodina mccordi ). Local communities depend significantly on natural resources. ![]() It has a unique landscape with more than 500 small islands providing habitat for many endemic species. The existence of yellow-crested cockatoos on Masakambing island still triggers questions because the location of Masakambing island is outside the Wallace line, which is not common to find families of parrots such as yellow-crested cockatoos.Īs the southernmost province, East Nusa Tenggara (NTT) encompasses the eastern part of the Lesser Sunda Archipelago. Besides, the Bugis ethnic who inhabit Sulawesi island is familiar with the yellow-crested cockatoo, sub-species sulphurea, and djampea. The local name Beka' reflects how the yellow-crested cockatoo is very close to Bugis culture on Masakambing island. The study results show that the origin people who inhabited this island were from the Bugis ethnic group. The study was conducted using a qualitative method with an ethnographic design. This research aims to discover the history of the people inhabiting Masakambing island and traces of Bugis culture through the existence of the yellow-crested cockatoo. This island is an endemic habitat for the yellow-crested cockatoo sub-species abbotti (Cacatua sulphurea abbotti). Masakambing Island has administratively located in the District of Masalembu, Sumenep Regency, East Java province, Indonesia. ![]()
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