Ghost birds of Maui

We remember these graceful birds (which at first we thought were herons) from other trips to Maui. They're cattle egrets, semi-tame birds which hang around condo developments waiting for the maintenance person to trim hedges and stir up the best-tasting bugs. I was sad to hear that islanders dislike these birds, which were imported to eat some sort of specific pest, with the usual results (eating all the wrong things: nobody handed them the menu when they arrived). But I think they're lovely, graceful ghosts. They can come and eat in my back yard any time.