Cockatiel heart wings: Why is my bird making them? Cockatiel heart wings or cockatiels with heart-shaped wings are normal male cockatiel behavior. The male cockatiel displays his heart-shaped wings or cockatiel heart wings as a sign of masculinity and impresses the female cockatiel. Also known as “the big chest.” A male cockatiel keeps his wings … Continue reading Cockatiel Heart Wings: What Does It Mean?