Very soft... I have put oyster shell grit mixed with their feed... im guessing they arent getting enough though... lots of the oyster shell grit seem to be too big where they wont eat it.... they eat the smaller pieces and toss out or dont touch bigger pieces... Whats the best way to crush down the oyster grit a little more?? How do you feed your oyster shell? If I put it in the feeder they dont eat enough... if I put it in a pan it goes everywhere except to their crop!! I feed the purina layena... its an 18% protein feed... best ive found at tractor supply was purina flock raiser thats 20% protein.... other than that the highest protein feed I can find is just the starter feeders thats 30%.... from what I read everywhere I need around 25 to 26% protein in the feed for quail... What info you got for me? If youve figured out a shell feeder system that works great post pics!!!!