Brown-streaked Flycatcher Muscicapa williamsoni ?

on 16th October 2021

I saw this darker looking ‘Asian Brown Flycatcher’ and considered M. d. williamsoni (Brown-streaked Flycatcher).

  1. David Wells (2007 & pers. comm. 2018) states that williamsoni “normally has an all-yellow, not black-tipped, lower mandible”.
  2. I reviewed all 15 images labelled as williamsoni (Brown-streaked Flycatcher) in OBI database and almost all have a clear black-tipped lower mandible. Also the same with birds in Singapore web sites and eBird images.
  3. Handbook of the Birds of the World (2020) on M. d. williamsonistates “more extensive dark area at tip of lower mandible”.

So I am inclined to go with a dark tip to the bill, including distal lower mandible.

This bird is browner that the nominate Asian Brown Flycatcher, has a pale buff eye ring (Wells), some pale brown streaks on breast/flanks.

Opinions welcome. Sadly no images of the wings, side or back.


Amar-Singh HSS (Dato’ Dr)

Ipoh, Perak, Malaysia


Location: Kledang-Sayong Forest Reserve, Ipoh, Perak, Malaysia

Habitat: Trail at edge of primary jungle

Date: 23rd January 2020

Equipment: Equipment: Nikon D500 SLR with Nikon AF-S Nikkor 500mm f/5.6E PF ED VR, handheld with Rode VideoMic Pro Plus Shotgun Microphone


If you like this post please tap on the Like button at the left bottom of page. Any views and opinions expressed in this article are solely those of the authors/contributors, and are not endorsed by the Lee Kong Chian Natural History Museum (LKCNHM, NUS) or its affiliated institutions. Readers are encouraged to use their discretion before making any decisions or judgements based on the information presented.

YC Wee

Dr Wee played a significant role as a green advocate in Singapore through his extensive involvement in various organizations and committees: as Secretary and Chairman for the Malayan Nature Society (Singapore Branch), and with the Nature Society (Singapore) as founding President (1978-1995). He has also served in the Nature Reserve Board (1987-1989), Nature Reserves Committee (1990-1996), National Council on the Environment/Singapore Environment Council (1992-1996), Work-Group on Nature Conservation (1992) and Inter-Varsity Council on the Environment (1995-1997). He is Patron of the Singapore Gardening Society and was appointed Honorary Museum Associate of the Lee Kong Chian Natural History Museum (LKCNHM) in 2012. In 2005, Dr Wee started the Bird Ecology Study Group. With more than 6,000 entries, the website has become a valuable resource consulted by students, birdwatchers and researchers locally and internationally. The views and opinions expressed in this article are his own, and do not represent those of LKCNHM, the National University of Singapore or its affiliated institutions.

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