I'm sorry to hear of your difficulties. This is what I feed as a 'treat' food that could temporarily substitute for parrot food....
a mix of any or all of the following diced to the appropriate sizes of the birds: rice, noodles, cooked beans, small sliced tomatoes, scrambled eggs, cooked carrots (diced small), cooked broccoli (or raw), cauliflower (raw or cooked), bananas, strawberries, good cereal (low sugar - like chex mix or cheerios), spinach, dandelion leaves (from safe non-spray source), clover leaves, violet flowers, daylilly flowers.....basically just about whatever you would eat, they could eat.
Now, if you're talking about chickens, if you have a lawn mower, mow the lawn with clippings as small as you can, let the chickens sort through that - any worms you can find, any bugs you can catch...dandelion and clover are welcome as well.
I hope this gives you some ideas.