I think if I penned in the babies, the mama would fly out to eat and then come back. I don't have enough material to pen everyone in every time they have babies, so I have to make do. We like them to be as free and wild as possible, too, so that sometimes means sadness, I'm afraid. I'll see what I can do about possibly making the area more baby-friendly, but it seems they're always finding new ways to get into trouble. We had one mama raise 19 babies last year, and she only "lost" the ones we caught and sold from her little baby-train. So this is something that's not come up before. Also, the geese are done investigating and are now just ignoring the babies.