No, I never worry about calcium for young birds. Mine go out on free range to forage at 2 wks and consume bugs and plant matter that has greater than 10 % calcium where as layer feed only has 3-4 % calcium. I'm doubting the layer feed has any detrimental effects on my chicks at that point....been using it for layer chicks and for CX for a long time now. My 6 yr old birds had 100% layer ration from day one, no chick starter at all. The CX really need the extra calcium anyway as their bones are growing quickly and they are putting on weight even more quickly.
All those different feeds are always a hassle and by now you can probably tell I don't like complicated or hassle, so I go the simplest route. All my feed is fermented in the same bucket so my adult birds have been consuming chick starter with their layer ration and my chicks have been consuming layer ration in their chick starter.
I never have illness in my flocks and my birds live long, healthy, productive lives....I don't really give much credence to all the dos and don'ts of feeding chickens that one finds in books and on these forums. My way is simpler and it works, so I just keep doing it!
Okay thank you! So ill just do half starter half layer and see how they do!
The way I have decided to raise my birds is to do my research, hear everyone's opinions, and then start trying things and if my birds are doing well then just keep it the way it is. I like simplicity. Especially because my mom helps me(when im in class or work) and she knows zero about chickens so when I just have one container of food and no special supplements or anything I can just say give them a scoop out of the white bucket and know they are getting exactly what they need.