I have a small flock of 3 hens. I feed them layer feed and mix in 1/4 to 1/2 cup fresh/frozen/canned corn. When it's very cold I mix in cooked chicken liver for extra protein. I tried giving them chicken calcium but they mostly left it untouched, so now I mix 1/4 tsp bone meal in with the food/corn mix. For treats I give them bread, which they love, or fruit and vegetable scraps which are hit and miss. They love watermelon and strawberries and lettuce. Other fruits and vegetables they may or may not be interested. Sometimes they peck holes in their eggs, so I don't give them eggshells or eggs. My hens came with my house when I bought it, so I don't know how old they are, probably at least 2 years. Last summer I got at least an egg a day, sometimes three. Now that it's winter I get maybe an egg or two per week. Since they are older I don't try to stimulate more production, I am happy for whatever they are able to produce.