Hi all we have 5 black stars 13 weeks old. I built the five gallon bucket feeder with the planter base. we put it up on cinder blocks but the girls fling the feed out of the feeder & all over the ground. Is this just normal or is there something we can do to stopem from doing this. you all have good ideas & creative solutions we hope you can help us with this. feed is spendy when they are only eating half of it. thankyou mgw.