You're welcome. I have tons of research articles, some printed and some saved bookmarks. This is just one regarding poultry and mushrooms you might find interesting, it took me a while to find it...Thank youI’ve been looking into adding mushrooms to the menu and for sources of vit d. glad I found your post.
https://www.feednavigator.com/Article/2018/01/19/Mushroom-supplement-may-boost-poultry-meat-quality
I found this about oysters but not looked into portabello because I thought they’d need cooking to reduce the agaritine, hadn’t considered sun drying them. Thanks for the links, much appreciated. Good to see other birds getting proper food.
: Layer pellets, scratch mix, sunflower seeds, pepitas, kale, blueberries, strawberries, budgie seed, parrot seed, seed bells, millet spray, fresh grass, rolled oats, bread, egg and biscuit, dried mealworms, dried crickets, cuttlebone, shell grit, boiled egg, cooked mince, cooked rice and pasta, milk thistle, dandelion
everything above except on grower pellets instead of layer pellets (lower calcium)
and rabbits 
Oaten hay, Lucerne based pellet, fresh picked grass, milk thistle, dandelion, parsley, celery, cauliflower leaves, mulberry leaves
and Cats 
cooked chicken, cooked beef mince, cooked rice, kibble, boiled sweet potato and white potato, peas, dried liver
and horses 
Lucerne hay, treats (molasses on bread and carrots)
Passwells lorikeet powder, mangoes, banana, apple
