Adult Eurasian Tree-sparrows feeding a fledgling

on 25th February 2019
Recently fledged chick with prominent white oral flange – arrowed.

A pair of adult Eurasian Tree-sparrows (Passer montanus), together with a trailing fledgling, attracted my attention by latter’s soft begging cries. The fledgling must have just left the nest as the pair of white oral flanges is still conspicuous.

Adult flying off after feeding fledgling

Oral flanges are the pair of fleshy white swellings lining the oral cavity. These are seen when the chick is hatched and remains for some time after fledging – see HERE.

The fledgling moved around the branches of a shrub begging to be fed. The adults were foraging for grass seeds on the ground below (below). They take turns flying the short distance up to feed the fledgling.

Adult foraging grass seeds.

YC Wee
26th September 2018

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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