Hens go broody when you don’t want them to… and won’t go broody when you do. 
newbie here: hatched 4 robust chicks from local fertilized eggs. Decided to pad the flock with mail order, same age bantam chicks from texas. Very stressful process but all arrived alive. Only 1 was sickly (now rip 
). currently i have 11 curious, mischievous , 5-7 day old chicks just navigating their brooder and hunting bugs and deciding pecking order and eating crumbles
). currently i have 11 curious, mischievous , 5-7 day old chicks just navigating their brooder and hunting bugs and deciding pecking order and eating crumbles