▁capacity ▁of ▁the ▁es oph ag us ▁of ▁some ▁wild f ow l . ▁The ▁third ▁stage ▁(" pre - f atten ing ") ▁last s ▁from ▁ 6 3 ▁to ▁ 9 0 ▁days ▁of ▁age ▁( 9 – 1 3 ▁weeks ). ▁ ▁The ▁birds ▁are ▁brought ▁inside ▁for ▁gradually ▁longer ▁periods ▁while ▁introduced ▁to ▁a ▁high ▁st arch ▁di et . ▁This ▁is ▁a ▁feed ing ▁transition ▁where ▁the ▁food ▁is ▁distributed ▁by ▁me als , ▁first ▁in ▁restricted ▁amount ▁and ▁time ▁and ▁there after ▁greatly ▁increased . ▁ ▁Fe eding ▁phase ▁The ▁next ▁production ▁phase , ▁which ▁the ▁French ▁call ▁ ▁or ▁, ▁or ▁" comple tion ▁of ▁f atten ing ", ▁involves ▁forced ▁daily ▁ing estion ▁of ▁controlled ▁amounts ▁of ▁feed ▁for ▁ 1 2 ▁to ▁ 1 5 ▁days ▁with ▁du cks ▁and ▁for ▁ 1 5 ▁to ▁ 1 8 ▁days ▁with ▁ge ese . ▁During ▁this ▁phase , ▁du cks ▁are ▁usually ▁fed ▁twice ▁daily ▁while ▁ge ese ▁are ▁fed ▁up ▁to ▁three ▁times ▁daily . ▁To ▁facil itate ▁handling ▁of ▁du cks ▁during ▁g av age , ▁these ▁birds ▁are ▁typically ▁hous ed ▁throughout ▁this ▁phase ▁in ▁individual ▁c ages ▁or ▁small ▁group ▁pens . ▁ ▁Typ ical ▁fo ie ▁gr as ▁production ▁involves ▁force - feed ing ▁birds ▁more ▁food ▁than ▁they ▁would ▁eat ▁in ▁the ▁wild , ▁and ▁much ▁more ▁than ▁they ▁would ▁volunt arily ▁eat ▁dom est ically . ▁ ▁In ▁modern ▁production , ▁the ▁bird ▁is ▁typically ▁fed ▁a ▁controlled