“…Therefore, there is only some information about this species' ecology (MacKinnon et al 2010;Eaton et al 2016;Taufiqurrahman et al 2022). In the East Java Region, several forest areas have databases related to the occurrence of Drongo species, such as Alas Purwo National Park with 4 species, i.e., Black Drongo (Dicrurus macrocercus Vieillot, 1817), Ashy Drongo (Dicrurus leucophaeus Vieillot, 1817), Hair-crested Drongo (Dicrurus hottentottus (Linnaeus, 1766)), and Greater Racquet-tailed Drongo (Dicrurus paradiseus (Linnaeus, 1766)) (Grantham 2000), Baluran National Park with 4 species, i.e., Black Drongo, Hair-crested Drongo, Greater Racket-tailed Drongo, and Ashy Drongo (Winnasis et al 2011), Meru Betiri National Park with 2 species, i.e., Ashy Drongo and Greater Racquet-tailed Drongo (Kurnianto et al 2014), Ijen Highland with 2 species, i.e., Ashy Drongo and Greater Racquet-tailed Drongo (Mittermeier et al 2014;Siddiq et al 2023), Bromo Tengger Semeru National Park with 4 species, i.e., Black Drongo, Ashy Drongo, Lesser Racket-tailed Drongo (Dicrurus remifer (Temminck, 1823)), and Greater Racquet-tailed Drongo (Prasetya and Siswoyo 2017; Avibase 2023), and Erek-Erek Geoforest of Ijen Geopark with 3 species, i.e., Ashy Drongo, Lesser Racket-tailed Drongo, and Greater Racquet-tailed Drongo (Siddiq et al 2023). Based on these reports, there are 5 Drongo species in the East Java Region: Black Drongo, Ashy Drongo, Hair-crested Drongo, Greater Racquet-tailed Drongo, and Lesser Racket-tailed Drongo.…”