Sex: Have boys and girls. Many Different Colors!! Briefing of Baby Cockatiels: My baby cockatiel is mature and have been weaned off the parents for about a month now.The birds were born in March 2015. Really Healthy and Plump, I have the Date of Birth that will be given to you when purchased(with Hatch certificate and information guides). Love to play with toys and go on swings,you can pet the birds without them biting.I do let the bird out of the cage once in a while and they do get along with my birds , but will need to take time with your birds.They go on the finger. I do trim their wing feathers to prevent them from flying away,They Like being pet. All my birds are Indoor birds. They Go right to sleep as soon as it gets dark so no need to put a blanket or towel over the cage. Would be a good gift for Siblings,Adults,Birthday and more!! No Deliveries!! No Shipping!! I have 21 year Experience with Cockatiels.