I would recommend going to http://www.foyspigeonsupplies.com/catalog/index.html they have a lot of different vitamins for pigeons. I would also highly suggest going down to your local pet store and getting a UV florescent light to put on top of the cage. You can usually find them in the reptile section. The fixture and bulb will come as a combo and usually costs around $30 but the bulb puts out UVa and UVB rays for about 4-6 months before you would need to replace it.