Wonder what some of the older fanciers, like the late John Ellis, might have said regarding feeding beans? I fed them last year for the 1st time in many years, because I was getting them for £8 a bag from Roger Sutton, and had plenty left for the racing season, so included them in their mix. Don't know about you guys but I find with these low protein mixes, the birds crave/look for protein after a few weeks on them. Found them to be a good guide to use in the mix as they would only eat them when they needed them. If there was too much left I would reduce the % until they were eating them up. I was once invited to watch a mates birds come from a 450ml race and seen the birds come home like they were towing one another in. 20 plus widowhood cocks he sent that day, and all his troughs were full of grain all grown on the farm, Beans, Wheat, Maize, and some Green Peas. None of them went to the trough when they went in. He let me handle some and you wouldn't believe they had been away. Asked how he prepared them, and he said the food is front of them all the time, as he doesn't have the time with his work, and only lets them out twice a day. He did say however, in his opinion, Maize is the fuel they need to build up reserves for flying. He was no mug either at it as he was a past winner of the Region O/B Average with 15,000 members, yes, 15,000!!!