I have a 2 year old Australorp that suddenly is walking 50% of the time like she's on hot coals. Lifts her legs up high. She doesn't do this all the time, but I'm wondering what this is. She's been broody twice for months and molted twice. She's just getting over the second molt. She hasn't layed eggs since all this has been going on--probably almost a year now. Anyone know why she's walking this way?