The Grey-cheeked or Morrison’s Fulvetta (Alcippe morrisonia morrisonia) (Hsiao 2017) is a bird I had expected to see more often but did not. Brazil 2009 says this is the “standard component of bird waves” in Taiwan. We saw a small flock of 5-7 birds calling out in the late evening while foraging; many other bird species were also present in a mixed-foraging party.
The calls are described as “jii, jii, jii” by Hsiao 2017 and “zee, zee, zee” by Brazil 2009. A recording showed that the call had between 7-10 notes with a duration lasting 1.5-2 seconds (5 inflections per second) – see sonogram and waveform above.
Call recording here: https://www.xeno-canto.org/458031
Amar-Singh HSS (Dato’ Dr) – Ipoh, Perak, Malaysia
Location: Daxueshan National Forest Recreation Area, Taichung City County, Taiwan
Habitat: 1,750-2,500 meter ASL, forested region
Date: 15th January 2019
Equipment: Nikon D500 SLR with Tamron SP 150-600mm f/5-6.3 Di VC USD, handheld with Rode VideoMic Pro Plus Shotgun Microphone