You can't buy "Birdeye" seed. Birdeye is actually Texasweed or Mexicanweed. It grows naturally here in Southwest Louisiana when conditions are right. Birdeye is what doves would rather eat while they are in this area but they will eat other small grain if the conditions are right. I shot a good number of birds last year in a milo field but it was bush hogged down to the ground and easy for them to access.
check out this link
http://www.lsuagcenter.com/en/crops_...+palustris.htm