The Great slaty woodpecker Mulleripicus pulverulentus (Temminck) is a globally threatened bird species and has been categorized as Vulnerable in the IUCN Red List of Threatened Species. We report the first photographic evidence of M. pulverulentus from Phibsoo Wildlife Sanctuary (PWS), Sarpang district, in the Himalayan Kingdom of Bhutan. A group, comprising five individuals, of M. pulverulentus was sighted opportunistically at the study location on 19 April 2022. We recorded the nesting cavities actively used by M. pulverulentus in the forest habitat dominated by Sal trees (Shorea robusta). This study highlights the significance of protecting lowland forests, and mature Sal stands in particular, for conservation of this globally threatened species of bird.