Date of Issue : 16 Aug 1994
Postmark : Singapore
Denomination : 20c, 50c, 75c and S$1.00
Stamp Size : 30 mm x 28.63 mm
Paper : Unwatermarked
Printing Process : Offset Lithography
Celebrating Singapore's rich birdlife, the Herons stamp issue showcases four species commonly found in the island's wetlands and coastal habitats. This issue was released in conjunction with PhilaKorea 1994, a World Stamp Exhibition held in Seoul, South Korea, from 16 to 25 Aug 1994, bringing together postal administrations and collectors from around the world.
The stamps feature the Black-Crowned Night Heron, a mainly nocturnal bird that spends much of the day hidden in mangroves before emerging to feed after dark (20c); the Little Heron, one of Singapore's most familiar waterbirds and can often be seen patiently stalking fish along shores and reservoirs (50c); the Purple Heron, a slender and elegant species whose long neck gives it a distinctive silhouette in flight (75c), as well as the Grey Heron, which is among the largest herons in Singapore and nests in small colonies near the Kranji Reservoir (S$1.00).