Egretta sacra (Gmelin, 1789)

Common Name: 
Pacific Reef Heron
Distribution: 

Widely distributed across southern Asia and Oceania. In Australia, the species inhabits most of the coastline and offshore islands, including the Torres Strait Islands.

Ecological Notes: 

Prey items include fish and other small aquatic animals. It will sometimes stand quietly with wings spread to attract fish to the shade and/or reduce glare from the water surface. Prey, when within range, is captured by a sudden jabbing down action.

Additional Notes: 

The species displays an unusual, non-sexual dimorphism, with most individuals possessing charcoal-grey plumage, whilst others have entirely white plumage.

References: 

Atlas of Living Australia at Egretta sacra Accessed 29 July 2020.

Wikipedia. "Pacific Reef Heron." Last modified 11 April 2020. https://en.wikipedia.org/wiki/Pacific_reef_heron  Accessed 27 July 2020.