Does anyone know if it is at all possible that a Blue Heron or an Egret would be able to take "5" Koi at one time? Then come back the next day and take 4 more; the next day he/she/they took the remaining "3". Yes, after the first hit we tried to protect the pond even more than it already is. The pond is relatively well-covered with tree branches. I'm thinkin' the one of the roofers next door came and helped himself to our fish thinking that they were worth $$$. Any thoughts out there? They were so precious to us ~~ some being over 20-years old.