As mentioned by kksuns during a moult their bodies go thru extreme depletion of protein..this is why they become so grouchy along with the external uncomfortablenss of pin feathers...they dont feel good inside or out..unless a proper diet is given to them their new feathers wont be healthy either..if you have these veggies in the house feed your bird these...dont experiment with most foods as what we eat mostly isnt good for them and can in fact also make them very sick...some veggies..carrots..snowpeas..spinach...watercress...beet leaves..brocolli...sweet potatoe...if you have some good egg noodle pasta VERY cheap in grocery stores ..cook some of it...let cool thoroughly before offering..above veggies feed raw...egg as kksuns mentioned...only boiled...you dont want to fry in butter or the like...well cooked chicken meat ground fine(no fat on it or skin)...again dont leave in cage more than a few hours...oatmeal for now or something like cheerios..no sugar coated or flavored cereal...no dairy products such as milk or cheese type items...hopefully your seed will come very very soon and hopefully you didnt order way more than you would feed in about 4mos as it can spoil quickly with mold etc..dont refrigerate your seed this speeds the deterioration of seed just tightly seal in a zip lock bag with air squeezed out and then keep a smaller amt in a tightly locked sealed plastic container..i dont even like plastic..cuz of the chemicals so i preferably use glass jars when i can....good luck...but dont let yourself run out of supplies to such a critical amt..in the future...your bird cant deal with the physical stress of improper nutritional levels for even short times....

Also avoid asparagus, aubergine or eggplant, cabbage, caffeine (tea and coffee), junk food, milk and cream, raw potato, and rhubarb (including the leaves).