Did you notice any broken stems or leaves which might indicate a bird landing on the plant to snatch the hornworms? Or holes in the soil where they dug down to pupate?

Hi vgkg.. No, nothing was disturbed. But all 3 of the potted tomatoes have cages around them, so a bird could sit on some of that, to get the worms. I wonder......I don't think hummers would be interested, but my hummer feeder is about 15' away from the tomatoes and downy woodpeckers frequent it. So maybe they got them? It's all very strange. Even the tiniest cats are gone. I miss them.....