we have just gotten a conure and we were told that it was 10 weeks old but its tail feathers are already full length
It is hard to determine the age of most parrots once they are weaned, as they have the same appearance as the adults. They still may fill out some but there is no significant growth beyond the point of weaning. Some species have markings that only show up as adults, or have other changes like eye color or beak or foot changes. You didn’t mention the species of conure but some of the smaller species will have nearly full length or full length tail feathers by 10 weeks. You can double check with the breeder again as it is easy to lose track of time when raising birds. As long as he is a good pet, a fwe weeks won’t matter. If you were trying to tame him then age can make a big difference because adult birds are very hard to tame.
Thank you for asking Lafeber,