Chickens, rain and mud!?!

Well, you can try adding large amounts of sand to help improve the drainage, but that can only do so much. If you have anough land, you can make two runs and alternate them, planting a fast-growing ground cover in the one you aren't using. When all else fails, some boards and low roosts placed around give the birds places to stand so they aren't in the mud.

 

I second the sand idea. It really helps.

 

When it got wet this fall I used sand in the run and then covered part of the run with a tarp so not as much rain got in.