Thanks again,
Not what I wanted to hear however - I did tell the children that IF this applied science lesson (using our much loved pets) was successful that I would keep a very pale purple and white budgie if it appeared (I wont let the budgies know that they are not my favourite colour!!).
I'm not sure how we'll go anyway - Iv'e researched a fair bit now - these birds are not avery birds (caged inside in a fairly large cage) - They are let out every evening to join us for their greens at the table when we are having dinner and get to fly the room at their leisure for a 3-4 hours - We have attached the nesting box through the lower door of their cage, but so far they have showed no interest in it. Lilley has pecked everything in site since we bought her home a year ago - quite destructive - (my cork board is almost gone!!) and Aussie has been "feeding" her for the past year as well. Just don't know the success rate on breeding such domesticated birds. Any ideas??
Cheers