Needs 0.5[item=biter-egg]/sec, equal to 1x[item=captive-biter-spawner] IMPORTANT: Before you have legendary buildings, either (a) place 5 blueprint copies with normal quality buildings and 2x[item=captive-biter-spawner], then split the biter eggs evenly with a 1 to 5 balancer, or (b) place 2 blueprint copies with uncommon quality buildings and split the output of 1x[item=captive-biter-spawner]