I agree.. Very much doubt bluegill will ever get in my new pond on the backs or feet of ducks, or other birds. Certainly the forage fish I stocked could have had a stray bluegill but I checked them very carefully. I suspect the goldfish also didn't come in the pond in the beak of a kingfisher or that a gracious raccoon carried a fish of one type or another from one pond to another without hurting it.
but on the other hand, if I hadn't seen the neighbor slip in with the white bucket, I would have sworn high and low after I, one day, drag a bullhead out of my pond, and then race to write a post here that this fish must have gotten into my pond via a great blue heron with a case of the stomach flu or a bald eagle flew overhead and while he was switching the fish from one talon to the other he dropped it by mistake.
I do wonder with some of the ponds that have been there 50 years or longer how many unknown human visitors came along and what they thought when 50 or more years ago they threw a worm in and low and behold there were bluegill in there?
