Vanuatu Post has released the heron stamp series, features Reef Heron or Ardea (Egretta) sacra on February 07, 2007. Sometime call as Pacific Reef heron.
This issued stamp is represented in miniature sheet, consist of 5 postage stamps which depicts its life since the chicks till adult.
The species displays an unusual, non-sexual dimorphism, with some members having entirely white plumage and others (the larger portion) being charcoal-grey. The reason for the color variation or "morph," is unknown, though it is most commonly thought to be related to camouflage.
