When my bantam silkie went broody a couple of weeks ago I decided to let her sit on some eggs (not her own, but three fertilized eggs from other hens.) This is my first attempt at incubating with an actual chicken doing the job, and apparently I picked the most immobilized brooder of all times. At day 13, the eggs now look like this? I'm hesitant to interfere, reluctant to give up hope. Can eggs covered in this much poop still hatch? Should I attempt to do anything, or just let nature take its course and hope for the best. (All three appeared to be alive when I candled at 7 days).