According to Wikipedia, the Yellow-breasted Warbler (Seicercus montis davisoni) is found in Malaysia, Indonesia and the Philippines. It’s natural habitats are tropical and subtropical moist lowland and montane forests. Currently this species has a wide range and a steady population size. As such it is not a threatened species.
The images shown here were photographed by well-known Malaysian birder Dato’ Dr Amar-Singh HSS in March 2019. He was then bird-watching at 1,700m ASL inside the pristine montane forest in Cameron Highlands, Pahang, Malaysia.
His usual equipment when out in the field comprises a Nikon D500 SLR with Tamron SP 150-600mm f/5-6.3 Di VC USD handheld with Rode VideoMic Pro Plus Shotgun Microphone.