I have a hen that has gone broody, about 2 weeks ago. She won't leave her nest box. I assume she gets out and eats/drinks when I'm not looking. I don't have a problem with this and don't care to break her from the broodyness. However, I wonder how long it will last and if her eggs are viable. The rooster was killed about a month before she went broody. Could her eggs still be viable?