A lot of you have or have had cockatiels. Are they as sweet and snuggley as GCC's? Are they loud? Do they get along with GCC's? There's two @ the Humane Society where my daughter works and she wants to adopt the friendly one. Even though it would be quarantined in her room for at least a month (it was found outside), I would like to know more about what to expect. I'm sure the birds will know there's "someone else" in the other room. Thanks.