Birdseed? I think ANY feed formulated for chickens would have improved the hens.The feather fixer feed (I believe) is responsible for my mom's older (3-4 ur old) hens laying some eggs this winter because before I gave them the pellets my mom just gave them birdseed. Their shells were very thin too.
$7 for 5 pounds is too steep for me. I pay < $12 for 50 pounds of layer pellets.