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Grey Heron – mating plumage

on 7th February 2019

“I saw this Grey Heron (Ardea cinerea jouyi) collecting branches for a nest. As I mentioned in an earlier post there are at least 24 active Grey Heron nests in this area. It was trying to break off old branches off a Rain Tree (Albizia saman), about 1 km from the nesting colony site. It failed with a number of branches/attempts (above) but succeeded later (below).

“These to me are presumed adult males as usually one bird will be waiting in the nest to receive the nesting material and build the nest (presumed female) and another will be collecting nesting material.

“Note that the bird is in peak courtship colour – what I like to refer to as peak mating plumage (above, close up of face below).

“The facial skin around the eye turns a deep blue-purple with pink just before the beak. The beak is pink at the base and orange in the middle and tip (occasionally bright yellow at the tip). Legs and feet are bright pink-red. The plumes at the crest (black) and breast and scapulars (white) are well developed. Once they have mated the pink on the lores will disappear but the blue will remain for a while; the beak will become more uniform orange-yellow in colour. Although still breeding (incubating or feeding chicks), much of the mating plumage will have dissipated and the birds return to a ‘non-breeding’ plumage state.”

Dato’ Dr Amar-Singh HSS
Ipoh, Perak, Malaysia
12th December 2018

Location: Ipoh, Perak, Malaysia
Habitat: Ex-mining pools ‘wetlands’ near limestone hills

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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