Photo: https://pixabay.com/photos/bird-dove-collared-2543570/
1. put out some bird seed (Sunflower seeds, millet, Cracked corn, wheat, etc.)
2. Because these are larger birds, they prefer feeding on a table or another flat surface(In my opinion feeders are good too but the perches have to be big and the feeder large.)
3. Make them a home in the winter (And summer) where they can feel warm and happy (Or buy one)