Yesterday when I fed the sheep, I saw that Clarabell had been marked pretty well. The color would normally be much darker than this, but Calvin's crayon is a little hard and Clarabell's rump was probably a little wet from all of this rain we're having.
The gestation for Katahdin sheep is 145-148 days (about 5 months). This means that if she settles (conceives) this breeding, she'll be due on (or about) February 4th.
If she doesn't settle, I'll watch for more marking on September 29th (17 day estrus cycle). Tomorrow will be crayon change day, so check back and I'll show you that. We'll have a new and exciting color! :-)