Interestingly, this species can either be white, or grey.
It is not known what determines the morph (colour variation) although some theories involve camouflage. Studies have shown that the white morph feeds more in breaking surf, where as the grey morph fed more by hunting on reef flats. The white morph is also more common around coral reefs, where broken coral makes the beaches whiter.
Also known as the Pacific reef heron or Eastern reef heron grow to around 55-60cm and feed on fish, crustaceand and molluscs.
They actively feed in the shallows along the coast between Cairns and Cape Tribulation.
The operator of Bush and Boat Kayak Tours reports regularly seeing a white and grey morph that appeared to be paired just south of Port Douglas at Oak Beach.