We have reached late October, the first cold days avert the presence of mosquitoes, it is time to choose the breeders for the next breeding season, a fundamental phase and therefore the breeder must, based also on experience, focus on this non-trivial aspect since if mistakes are made at this stage we will bring with us various problems and even failures or partial reproductive successes. The advice in the first place is a ‘fecal analysis by an avian veterinarian, who will be able to monitor the health status of possible breeding stock, avoiding future problems.