So yesterday I pulled the 4th dead bird out of my pond. 3 times I found them in the skimmer, another time just floating in the shallows. These seem to be baby birds. But I see no nests anywhere. This has happened over the course of a month or so. What gives? Is this kinda normal? All my fish are fine, even the extra hundred baby minnow or goldfish that I don’t know what to do with.