Thank you for answering this so quickly! Here is my update:
My Roost animation was showing empty even though I had it loaded with Rye and Barley. I also did not have my partridges grouped like in the above screenshot you provided, and they were taking up 2 slots in the roost. I removed everything and then I put everything back in the Roost in this order:
(100) Rye (Not sure how much is required. Once added, Roost animation indicated there was feed. So now I wait for the 6h Roost Cycle to complete.)
I also did the same with the partridges and Barley, in the same order and I am awaiting results.
I am guessing that like the Windmill, there is a glitch at times where the structure does not recognize that the requirements are met, so it does not work. With the windmill, removing the components and then putting them back in will start the animation/process just as it does with the Roost.
I will update in 6 hours when the Roost Cycle has completed. Thank you again for all of the help! Keep up the good work!