We recently added one more entry in our nature journal!
The other afternoon, I saw an egret-like bird in Geylang, perched near a canal. I immediately emailed a friend (an expert in Singapore’s biodiversity IMO) who told me that it was a cattle egret (Bubulcus ibis).
The cattle egret is a species of heron, and this particular bird was sporting its breeding plumage, according to my friend. During the breeding season, adults develop yellowish plumes on the back, breast and crown, and the bill, legs and irises become bright red for a brief period prior to pairing.
According to A Field Guide to the Birds of Peninsular Malaysia and Singapore, free-flying resident egrets from Jurong Bird Park are often seen in Western Singapore, where they are indistinguishable from migratory populations (which frequent Serangoon Sewage Works).