Those goddamn rabbits
...or possibly birds, maybe. Crows are very smart, after all.
So this morning I saw that the corn seed I had replanted was dug up and eaten. This leads me to suspect birds or possibly field mice (though how the field mice would get up there and why they would bother I don't know).
So next step is a physical barrier. I'll use chicken wire to build a kind of tent/cage over the box. That should protect it until the seedlings are young shoots, and then I just have to figure how to protect the corn once it has ears.
If something gets the corn through the chicken wire, then I'll know it's mice.
In the meanwhile, I need to put lights out there, and also to sprinkle used cat litter around. Fortunately, I have a ready supply of used cat litter. I've been delaying, though, because it's been rain, rain, rain, rain, RAIN OMG WHEN WILL IT STOP RAINING, rain, rain here.