i have a flock of 5 chickens, all a year old. Today I noticed one my RIR was in the nest box for a while (I've been keeping a very close eye on my chickens as I lost one about a month ago,natural causes it turns out). I checked on her a few times today, she seemed fine and healthy but every time I opened the nest box door she puffed up and squawked at me. This is the first day I've noticed her in the nest for a long time. She's been in there for about 7 hours now. All other hens have gone to roost for the night and she is still on the nest (has about 5 unfertile eggs under her now). I'm not against giving her some eggs to raise. But I'm wondering...is she broody? I know RIR (production) are not known for being very broody. What are the chances she'll stay broody and successfully hatch some chickens. I don't want to buy fertile eggs only to have her give up half way thru (although I know it's possible-but I wonder how often it happens).