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Olive-backed Sunbird’s blue nest

on 11th May 2010

A pair of Olive-backed Sunbird (Cinnyris jugularis) built their nest attached to a wind chime along the balcony of Jean Ho’s home sometime in March 2010 (left).

What attracted her attention was the mass of blue synthetic fibres, possibly some sort of insulation material, enveloping the nesting chamber. The nesting chamber itself was made up of dried plant material – stems, roots, leaves, etc. The image above-right shows the female sunbird feeding her clutch of two chicks.

The nestlings fledged on 15 April. And just before the juvenile birds flew off, a Black-naped Oriole (Oriolus chinensis) tried to attack the nest. Fortunately the adult sunbirds were around and somehow managed to drive off the attacker.

On 1st May, another pair of Olive-backed Sunbirds took up residence and the female now spends the nights in the nest. “I can’t tell if it is the same pair or another, although we feel the second pair seems less timid and the female bird stays put in the nest when we go out to look at it at night,” recounts Jean.

Birds have well-developed colour vision. So the sunbirds must be well aware of the colour of the synthetic fibres they collected. They probably made used of the fibres because they were available. However, the bright blue nest has no camouflage properties. In fact they make the nest conspicuous to predators (and these include humans). Thus the chances of a failed nesting is high. However, being in a home of a nature enthusiast like Jean, the chances of it being destroyed by humans are slim. But not so by orioles, for example.

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

2 Responses

  1. Wow, what a strange decision for these Olive-backed Sunbirds to choose this nesting material. I’m glad to hear that they had a successful nesting and the nest is being reused. I would think that it would be the same pair of birds.

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