You'll have a cockatiel demanding whatever crunchy food it is you're eating out of a bag. Work with patience. It's the owner's job to get to know the pet and its needs, and to help introduce it to healthy foods safely . A cockatiel also needs companionship. Here are some beginners' guidelines.
Females supposedly are mellower and just love to snuggle, but they are quieter than males.
In other words, don't worry about it too much. Cockatiels can live from 15 to 25 years, with good care. We raise many different colors of cockatiels. They are available as parent-raised or handfed. Several of the colors are shown below.