My budgie for the past 2 years 2 moths in the beginning of summer where his left leg becomes lame and he holds it up all the time never weight bearing.. happened the exact same time two years in a row we gave Lupron it worked so we said it way enlarge teste,, the second vet that did ct scan did not think it was enlarged teste and did not no , this year after we thought we was better he started doing it again but now he’s holding up the other leg..does this tell me Its Not the teste?