I mean, I know what they are in general, but just in deeper detail, what are they? I went to check the water and food for my isolated quail hen, and it was unusual because I found a white egg in the corner of her enclosure. I picked it up, and she immediately turned around and ran up to me and pecked at it, thinking it was boiled egg! (As that's probably her most favourite treat!) I was surprised that she didn't gobble it up before I came. Luckily I managed to take it out before she could peck anymore. But it broke easily, she made a hole on the side and when I gently pressed on the sides of the egg, a small crack started appearing, and the texture of the egg felt a little weird anywho. Now, she laid that egg early in the morning, whereas it's usual routine for my quail to lay in the afternoon or evening. She continued laying normal eggs the day after (I provided her with extra calcium stuff). So, I'm just wondering, are soft-shelled eggs just eggs still in the process of being made? Or just that there was a lack of calcium in her system, so the egg couldn't continue being formed and had to just come out? Thanks.