Cockatiel Pair (Cocktail) Friendly and Productive for Sale

Friendly cockatiel pair for sale, approximately 3 years old. They are productive and have previously produced many offspring with me. Their health is excellent, and they have no issues. The male plays the peekaboo game and whistles the song 'If You're Happy'. The female is very attached to her owner; she's extremely affectionate. I really don't want to sell them, but I can no longer care for them properly. I hope whoever takes them will pay attention to them and not leave them in the care of children.