We have a red star that is about 3.5 months old (as best I can remember the date we got her). Today she laid an "egg" with a soft shell. I'm remembering as a kiddo hearing my dad say that their first egg can be like that. Should we be concerned? She stood over the egg for a long time, very somber. Usually all our chickens are roaming around munching and scratching, so this was quite different behavior. I'm reading on here about getting them some oyster shells or grinding egg shells for them to munch, so I will do that also. I just feel like she's young?