Are trace minerals recommended
I have recently begun making purchases at an online store. Each time they ship, they have included a free sample of other products. "AviVita Plus" and "Trace Minerals for Birds". I think these are similar products to each other. Is it recommended to give to my birds? (Budgies, Moustache Parakeet and Peachfront Conure). Also, does age make a difference in the need for something like this?