Growth on the tarsus of a Javan Myna

on 31st March 2017

MynaJ-tarsus deformity [KCTsang]

“Managed to get a picture of the tarsus of a Javan Myna (Acridotheres javanicus) this morning.

“I have noticed this deformity for some time. However it does not affect the bird’s every day function.

“Maybe some one out there could have an explanation for this growth?”

KC Tsang
18th March 2017

This post is a cooperative effort between Birds, Insects N Creatures Of Asia and BESG to bring the study of birds and their behavior through photography and videography to a wider audience.

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.

Other posts by YC Wee

5 Responses

  1. Dear Tsang, at first glance (as a medical doctor) I was wondering if this was overgrowth due to a previous fracture. But the bone/limb look straight and not deformed so less likely. Possibly some disease with a growth.

  2. Hyperkeratosis is very common in caged songbirds that have been fed a diet which is too dry and which lacks the correct nutrients.
    Just visit any of the places where hobbyists bring their songbirds to socialise. You will notice this condition, especially among the older birds.
    For convenience, many hobbyists do not give their birds sufficient insects and fruit in their diet, as these result in messy and watery stools.
    On the incorrect diet, over a period of years, the birds will develop this condition.

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