Maintenance Peck blocks 500gm – These peck blocks are deliberately soft, and are cooked. These blocks are therefore attractive to the birds as they have a great muesli smell, contain tasty morsels of molasses, and are supplemented with vitamins and trace elements. These blocks can replace the liquid and powder vitamins, and more importantly, because they require some time for birds to consume them, act as an anti-pick anti – boredom device. These grains are less inclined to impact in the gizzard and keep the gut contents flowing. Preventing gizzard impaction is really important in free range birds, and the blocks are designed to prevent contents becoming a hard ball in the gizzard, which blocks the gut. Therefore regular supplementation of free range flocks, especially when on long green grass is strongly advised.