Lovebird loosing feathers

by Barb
(Canada)

My Lovebird has recently lost some feathers around the neck and a little under the feathers. I have always given her a variety diet, seeds, fresh fruit, and mash with vitamins. I have not taken her out much recently and was wondering if feathers come out if they are depressed or lonely. I noticed today only the feathers are out and will besure to hold her every day. Pls tell me what else could be the problem.