I am giving mine, canary seed, egg food, mixed wild bird seed including sunflower hearts, dandelion + flower heads and seed heads. Grass, chickweed in fact any weeds dug up from the garden go straight in with the birds, and the branches with leaves from the sycamore trees, covered in aphids and some sticky stuff, they go potty for it.
The hen & cock have raised all 4 eggs, and the chicks are all equal in size, some real bonny ones, all yellow with green caps on the tops of their heads, they are about to fledge any minute now And still have another 2 hens with 4 teeny chicks each.