Well, I thought I'd just check in and report status. I originally posted on the 5th that this hen had gone broody. Man is she stubborn.
For a while she had flipped a plastic sour cream tub over and was sitting on it. Now she, and the Maran that also went broody in the mean time, each have a golf ball to care for.
The Maran is a bit less hard core, and is less of a surprise to see when she trots out of the hen house for a dust bath, but they are absolutely stuck on sitting in their respective positions all day and all night.
The Australorpe has lost nearly all her weight and is as grumpy as it gets. We go back and forth between referring to her as "black broody" or "huff 'n fluff". That's because when she sees us coming she gets all fluffed up and huffin/puffin and sounding grouchy.
The Maran's crown is practically grey in color, and a bit less grumpy, but stubborn nevertheless.
So... 26 days later, and there she sits with no signs of giving up her vigill. Does this last much longer?