The Pacific Reef Egret (Egretta sacra) found in Okinawa, Japan may be black or white.
Today I found a link saying, the ones in New Zealand are predominately grey.
They have a shortage of eye Doctors down there is what I'm thinking.
Have a look at photos of wildlife, festivals and travel sites here. Sharing tips for travelers with a twist of humor is part the life I enjoy in Okinawa, Japan. Photos and text Copyright © Michael Lynch. All photos contain traced digital watermarks. You may contact:http://www.ryukyulife.com/ for licensing.