You are a generous and thoughtful soul! These are lucky birds. There is only so much you can do. Planting sunflowers is a nice idea, but remember they are annuals and will be available only for one season. (They may self-seed but that’s not nec guaranteed.) You could leave the feeder for the next resident and, maybe, some seed, with instructions and best wishes. You could pass the feeder/seed on to a neighbor or friend in the vicinity. Other than that, depart with the understanding and assurance that you provided great relief and support to the birds.
You are a generous and thoughtful soul! These are lucky birds. There is only so much you can do. Planting sunflowers is a nice idea, but remember they are annuals and will be available only for one season. (They may self-seed but that’s not nec guaranteed.) You could leave the feeder for the next resident and, maybe, some seed, with instructions and best wishes. You could pass the feeder/seed on to a neighbor or friend in the vicinity. Other than that, depart with the understanding and assurance that you provided great relief and support to the birds.