The LA Zoo also has one Scarlet Ibis that is completely white. One of the keepers told me that American White Ibis have pink beaks, while Scarlets tend to have darker, almost black, beaks.
Here is a photo I took of the LA Zoo's white Scarlet Ibis: [ame="http://www.flickr.com/photos/mstickmanp/3416130139/"]Scarlet Ibis at the Los Angeles Zoo on Flickr - Photo Sharing![/ame]
Here is a photo of an American White Ibis also at the LA Zoo: [ame="http://www.flickr.com/photos/mstickmanp/3416941720/"]American White Ibis at the Los Angeles Zoo on Flickr - Photo Sharing![/ame]
The one in jbnbsn99's photo seems to have a dark beak, so I guess he is correct.
I'm pretty sure it is a Scarlet Ibis, there were a few white one in the flight cage. All different shades from deep red to white with some gradations of pink in between.
