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The endangered golden‐rumped sengi are found only in Arabuko‐Sokoke Forest with 395.4 km² of forest habitat, and perhaps in a few isolated forest and thicket fragments of total area less than 30 km² all within central coastal Kenya. Understanding its habitat use is an important requirement to develop better conservation measures for the species and its remaining forest habitat. A more reliable method for monitoring its status is also needed. We used the Bayesian occupancy modelling with camera trap data and habitat mapping to characterise the species habitat use in the Arabuko‐Sokoke Forest. The species uses 328 km² (95% CI: 289–364 km²) of Arabuko‐Sokoke Forest habitat, and its site use increases with distance from forest edge, with the highest site use in the Cynometra thicket (0.93; 95% CI: 0.82–1). Its use of the mixed forest habitat has been significantly reduced following years of logging of Afzelia quanzensis. We recommend the use of modelled occupancy, interpreted as the proportion of area used by the species, to monitor the species status. Occupancy models account for detection probability, and heterogeneity in site use and detection can be incorporated. Estimated territory sizes can be combined to obtain abundance estimates.

Habitat evaluation is considered an essential step for assessing the potential for an area to support a viable reintroduced population. Remote sensing techniques can support such investigations, by greatly enhancing the temporal and spatial coverage of habitat assessments. This study makes use of freely available earth observation data to evaluate the suitability of the Ouadi Rime–Ouadi Achim Game Reserve in central Chad for the reintroduction of the Scimitar-horned Oryx. The reserve was the last stronghold of the species within its historical range, prior to extinction in the wild in the 1980s, providing a basis for reintroduction. Results show that since the 1980s, there has been a steady increase in average annual precipitation and satellite-derived estimates of primary production. The spatial downscaling of the average trend in primary production showed that the north of the protected area exhibited a drying trend over the period 1982–2008, while the south was associated with intense greening. As a result, the subdesert transition zone preferred by oryx is currently narrowing. If this is correct, this implies a potential reduction of favourable habitat for the oryx, which could have detrimental effects on the success of establishing a self-sustaining reintroduced population. Resume On estime qu'une evaluation de l'habitat est une etape essentielle pour estimer quel potentiel a une region de supporter une population reintroduite viable. Les techniques de detection a distance peuvent aider lors de ces investigations en augmentant fortement la couverture temporelle et spatiale de l'evaluation d'habitats. Cette etude utilise des donnees d'observations terrestres librement accessibles pour evaluer si la Reserve de Faune d'Ouadi Rime-Ouadi Achim, au centre du Tchad, est propice a la reintroduction de l'oryx algazelle. La reserve etait le dernier bastion de l'espece dans son aire de repartition historique avant son extinction a l'etat sauvage dans les annees 1980, ce qui donne un fondement a cette reintroduction. Les resultats montrent que, depuis les annees 1980, il y a eu une forte augmentation des precipitations annuelles moyennes et des estimations de production primaire derivees des donnees satellites. La reduction spatiale de la tendance moyenne de la production primaire montre que le nord de l'aire protegee presentait une tendance a l'aridification entre 1982 et 2008 alors que le sud etait plutot associe a un reverdissement intense. Par consequent, la zone de transition subdesertique preferee des oryx est actuellement en voie de reduction. Si ceci est exact, cela signifie une possible reduction de l'habitat favorable aux oryx, ce qui pourrait avoir un effet negatif sur la reussite de l'etablissement d'une population reintroduite autosuffisante.