I free feed Derby pellets. Have done it with all our bunnies. They basically eat what they want and leave the rest. Tends to prevent them from becoming piggy and eating until it is all gone. Kale is very high in calcium and should only be given as a treat, same with carrots. Rabbits have a tendency toward bladder sludge which is caused by too much calcium in their diets. That is why alfalfa pellets are usually only given until they are 6 months and weaned off to timothy pellets. Same with the hay, my vet suggests timothy, oat or grass hay from the start. She has seen alot of rabbits with bladder sludge, according to her. There is a long list in the forum library of veggies that are safe to feed rabbits.You may want to print it and tuck it in your purse for reference when shopping. Just a few come to mind- arugula, carrots and carrot tops, chard, ciantro, parsley, clover, dandelions ( these are usually in the exotic veggie section ) endive lettuce ( the heavy leaf stuff ) kale- as I said in small amounts, spinach- same thing as it is high in calcium, lettuce - romaine, red and green, spring or herbal mixes ( not the type with extra spinach ), treats of fruit such as bananas, strawberries, raspberries ( they can also have the leaves from these - if the plant is insectaside free ) apple - not the seeds!!, slices of peaches or pears ( not seeds or pits ) grapes must be mashed or sliced so they don't get them stuck in their wee throats. That approximately it. As I said find the list and print it. I have one in my purse.