I've got 12 Cockatiels and 8 budgies outside in an aviary, and three budgies indoors at present. One of those has recently been given to me, and it's so wild, I'm calling it Psycho! She's going out in the aviary with the others as soon as the weather warms up a bit, can't risk her getting too cold overnight. Two of my boy cockatiels are 18 years old and still in good health, the youngest ones are about 3. I used to keep all sorts of different species of birds but have cut down a lot over the years. They are a big tie (I've not been on holiday since 1990, apart from a few days here and there when I have to pay someone to come and look after all my pets)