I have a tiny garden, with lots of leafy things. My 5 11-week old chicks range free, all eating raspberry leaves, grape leaves, peach tree leaves, iris leaves, cilantro and tarragon, dahlia and rose leaves, and some grass I grew for them. I've fenced off my strawberry and rhubarb patches, after the chicks showed no discrimination and were chowing down on both with equal enthusiasm.
Every morning they get Greek-style yogurt, with rolled or steel-cut oats,
berries, bananas, apples, pears, grapes or raisins, eggs,
Sunflower seeds, flax seeds cooked rice, sliced amonds or almond meal mixed with kefir. They eat better than I do!
So far they ignore everything that comes out of the house as scraps: no lettuce, tomatoes, melon rinds, sardine tins with bits of fish inside, and so on.
I'll have to try to give some meat or meat fats. How do others feed the meat fats- whole/diced or rendered and mixed in?