Gail and Pete,

Some cockatiels are finicky eaters but most usually will eat seed. If she doesn't eat seed, she must have a preference for pellets an that (pellets) seems to be the choice these days.

Gaining weight is totally different than feeding a nutritionally balanced diet to insure a healthy cockatiel. While some cockatiels continue to grow until they are about two years old, some reach their physical maturity as early as six months.

Seed or pellets, with a fresh vegetable or fruit daily, should be sufficient to maintain your birds good health. It can sometimes take a few weeks for the bird to discover they like the new menu, so be persistent and offer it daily until they acquire new tastes.