Update: I finally caught her!!
3 days ago this little stinker disappeared. She wouldn’t come to the coop to roost and she’d only appear for breakfast. This morning I finally followed her under the porch where she’s sitting on infertile eggs. My plan was to catch her and lock her in the coop with fertile eggs. But I can’t catch her. So for the next few hours I’ll be trying to catch this tiny chicken that easily outruns me 😎