Heres a very handy link for those of you who would like to beed birds successfully.
In order to do so, a very important aspect is record keeping.
Firstly it is very important to be able to identify your birds. Dont rely on your memory too much.
When your birds start breeding well and there are a lot of youngsters, its important to know who their parents are and where several babies are reared by one pair of parents, you need to be very careful not to
match siblings together to breed at a later stage. This will inevitably lead to interbreeding deficiencies, deformities, and may result in weaker and poorer performing birds, ( which incidently should never be sold as this just exacerbates the problem ) and a definite drop in your bird breeding success rate.
So its important to ring the babies according to a system, so that data can be recorded for each individual bird. In the case where its not pratical to ring babies in the nest for fear of parents deserting,
or any other reason Coloured Split Plastic Rings may be used as these can easily be fitted after the birds have fledged.
So check this link out on a Record Keeping System for your birds; its about as good as it gets and is very comprhensive. Click Here http://www.birdsevolutionpro.com/