So.. we went to the vets, and I explained the syptoms as they had appeared, she agreed that they were signs of BPFD, but as she had been showing them for over 3 months, felt that most of the young birds she had seen with it died quite quickly so she wasnt totally convinced as it could also be caused by other things. She felt her crop, listened to her heart etc and said they were all fine, shes not underweight, alert, no signs of respitory problems, poo ok colour and judging by the fight she put up being handled appeared to be in good form. So decided the best thing was to prescribe baytril for 7 days, keep going with the diet, add supplements/nutrabal and maybe get a UBVa lamp. So we are going to monitor her, keep up with the healthy diet and watch for secondary infections and have those treated as and when.