I noticed my turkey was resting in the corner a lot one day. I went in and he got up and walked away. The next day I went in and he didn't move right away. He was slow and his poop was dark green with a portion of yellow. The next day he wouldn't get up at all and died that day. The other turkeys have light brown poop with a portion of yellow. Is the poop color a sign of some type of sickness and which one? (red bourbons) None have eaten grass. All feed. Game feed starter and corn. Thanks for your opinions and advice.