"White spoonbills and black-faced spoonbills are very similar in shape and are almost impossible to distinguish when seen from afar. But as recorded sightings of white spoonbills in Taiwan are extremely rare, the birds La Touche observed may very well have been black-faced spoonbills.
琵鷺和黑面琵鷺外形十分相像，遠看幾乎無法分辨；但琵鷺在台灣的記錄十分稀少，所以拉圖許觀察到的很可能就是黑面琵鷺。