Right now, I would start trying to give your Alex some other fruits and vegetables other than just tomatoes. Parrots need to eat a wide variety of different fresh, raw vegetables and fruits in order to remain healthy, these foods provide the regular nutrients that we all think of but they also provide what are referred to as phytonutrients which aid in digestion of their food. Later, when you have him eating a larger variety of fresh raw produce, you will be able to reduce the seed mix that you are feeding twice a day to once a day.
Dowels are the totally round wood perches that are in the cage that you have in the pictures of Alex that you posted here. Perches that are totally round will eventually bruise the parrots feet and cause sores and even bone damage because when the parrot perches on them they always put pressure on the same place on the foot. For this reason perches made of natural tree wood with the bark left on are by far the best perches that you can have for your bird and you can often get the branches for free and make your own perches, They must be made from a wood that is safe for your bird. Here is a link that contains a listing of various things that are safe and toxic for your bird that you should copy and keep handy. It tells you safe and toxic woods, foods, plants and much more. http://www.parrot-and-conure-world.com/ ... birds.html
By the way that is not a parrot cage. The bars on a parrot cage will run horizontally on at least two of the sides of the cage. The horizontal bars are better for them to climb around on.






