 I can imagine some people are listening thinking, well, I would love to attract owls to my yard, but is that a good idea? Is it for the owls? Is it safe for the other birds in the area? What would you recommend? Should people put owl houses in their yards or how do you figure out that kind of thing to do? I think it's a wonderful thing. As I said, I put up an owl box in my own yard. The other thing that I've tried to do is to keep my yard as full of native plants as possible. I don't mow my lawn, which means that it's good habitat for lots of things, including little rodents probably. But when you have owls, they take care of that problem. I think they're a wonderful bird to have around. They're not going to decimate the bird population. They eat lots of little birds, but they eat lots of rodents. It's just part of the sort of natural chain of things to have these birds, birds of prey in a habitat. What's different about a bird box from an owl box, and how do you make one? Well, the owl box has a much bigger hole. Owls are really big birds, most of them. Although pygmy owls, elf owls, those are little tiny birds. They're mostly forest owls, so you're unlikely to get those around here. Maybe if you live in Arizona. But if you go online, you can find some really cool owl box designs. And in different places around the world, they're making nesting boxes out of all kinds of interesting materials. And the Australians, I think, are actually using 3D printing to create owl boxes. But it's very hard. These owl boxes, these nesting boxes, they're designed to try to imitate the hollows in trees that owls use for nesting in their natural state. And the nesting environment inside a hollow in a tree is a very different thing from the nesting environment inside a nesting box. So scientists are trying to figure out how to make these nesting boxes a little bit more like the actual hollows. And that's where the 3D printing came in. That's interesting.