I used to take the chicks away too, because i thought they would be safer inside than outside. But then i saw how sad the mama hens were to lose their chicks. After considering how much of their normal busy chicken lives they had sacrificed to set on and hatch their eggs, i took pity and built many chick-safe pens covered in 1/2 hardware cloth. That allowed the mamas to contently & safely raise their babies. It creates a lot of extra work though, & now i break many more broodies each year than i allow to hatch. I used to let all hens that went broody hatch chicks. I loved watching the mamas with their babies. But the year i had 40 hens hatch and raise 400 chicks was the year i said no more. All those mamas completely wore me out!