Hi! I have a 3 month old Lovebird. She/He has been eating well, still not doing well with her fruits and veggies , but I offer them daily. Lately it has sown a lot of the time preening and I’m not sure if the darks spots on the feathers is due to this or is it a disease or mites? It’s in a very well kept cage and very spoiled . I’m attaching pictures to see if someone has any ideas of what can be happening here. Thank you in advance.