Greetings: (Maggie typing for Jay)...To be polite, Bird tricks and I have not agreed with each other for over a decade, it seems. I personally don't believe in their techniques. Okay, on with the good stuff...Timbersmom is right on...
Veggies: Green leafy (kale, mustard greens, dandelion greens, (not too much spinach because it has salt), etc., broccoli, cauliflower, (our Salsa loves cooked cauliflower with peanut butter mixed in ) carrots (slightly boiled because the cooking process brings out the nutrients), sweet potatoes/yams, red/orange/yellow bell peppers, zucchini, squash, peas, lentils, and split peas, etc. Nuts: Almonds, (crack the shell at the tip so your Grey can dig out the nut), walnuts (a total of three a day is great), and pistachios (No salt). Fruits: A couple times a week...red, seeded grapes, papaya, apple, and mango, etc. Legumes: Great for parrots, cooked organic no-salt garbanzo beans 2-3 times a week...too many and they bond and remove other nutrients. Chicken and turkey (white meat), leg bones, tuna (albacore no-salt), can be served a couple times a week. Scrambled or hard boiled egg, cut in half and served with the shell intact is good a couple times a week. No salt peanut butter, (my brain is dead right now...I am sure I have forgotten stuff, but this is what we feed our parrots and what we have fed them for the last 100 years....
Pellets: As much as they are advertised, I have yet to find a pellet tree...Pellets are mostly meal, cooked at high heat which destroys a large amount of nutrients and are man-made. SO...keep a small bowl of pellets if you wish 24/7 in the cage. (No fruit or colored pellets). The main diet we use is Volkman's Large Hookbill Safflower formula (Amazon)...this is the diet we have used since the 70's with all of our fids. It is not necessary for mashes or elaborate meals...everything here can be eaten or shared off of a dinner table. They also like cooked oatmeal out of your bowl with raisins...low or non-fat yogurt, or cottage cheese.
A treat: Birdie Bread...Jiffy Cornbread mix with two eggs (shells and all), two jr sized baby food (your choice-I used sweet potato/apple mix for example), mixed veggies (really, whatever you want to throw in there...), bake per instructions as muffins or pan and cut for snack...can be frozen for later too...