I've had my current cockatiel for 6 or 7 years now. I've kept several different breeds for many years and wish Kaytee had come out with this when I had a "birdroom" full. I found that cockatiels aren't so crazy about the sunflower seeds that are in most seed mixes although I have mainly used Kaytee brand for years. When they came out with this 'exact' food I figured I'd see if he'd like it better. It took him a while to warm up to it as he is quite spoiled (as all our animals are) and he can be very vocal when he wants something. I had to switch him slowly over the better part of a year and finally got him to take the exact without the seed mix. I do suppliment him with the Kaytee moulting & conditioning mix in a small dish which is available all the time, also a little Feista mix occasionally and a millet spray every month or so. His cage also has the Kaytee brand Kay-ti-cob on the bottom which is so much better and cleaner than newspaper and also gives my bird a way to naturally foreage and play as I have always kept the bottom of the cage available for him to explore. All in all I have to applaud Kaytee Brand for all their animal supplies. I have tried others but always come back.