Update 11-12-2020
My Nylanderia vividula colony had way outgrown their mini-hearth, so I designed them new set up using a dollar store storage container and Perfect Cast plaster from Hobby Lobby. The outworld is made from a BoxBox container.
I hooked up their mini-hearth last weekend via tubing and waited a few days, but no movement happened. I decided to dump them out because the old mini-hearth was beyond nasty with creepy mold even growing up in the foraging area, plus it was impossible to lift their lid or clean.
Nylanderia are probably faster than any other species I've kept, so this was not a fun endeavor. I drained the water tower first with a syringe, then I basically swished as many as I could out with my goose feather. The queen and a lot of stragglers refused to budge, so I shook them out with some hard whacks to the back of the mini-hearth. I lost sight of the queen for a while, which freaked me out, but it turns out that she jetted into the nest part pretty quick.
Here's them as they started moving in.
And here is a crummy photo of all the colony settled in now. They chose the middle chamber mostly, and piled as much loose sand as they could find on my mock water tower. Go figure.
There is not much brood left at the moment, so I will be hibernating this colony very soon. In all the hub-hub, I did see a worker carrying a dead male alate, though, which is exciting.
"The ants are a people not strong, yet they prepare their meat in the summer." Prov. 30:25
Keep ordinary ants in extraordinary ways.