My hen is an 8 month old Black Australorp, she has been raised to free-range most hours every day. She has suddenly refused to allow the roo to mount her. I have stopped gathering her eggs, leaving 2 in her nest. She wanders the yard until dusk, when she hurries back to the nest. The temps here have risen to hi 70's - low 80's. Will her eggs be viable after the day of neglect? Should I confine her inside the copp in hopes she'll set on those eggs?