Oh, another idea that has worked with my other birds: get a shallow planting container (or even a kitty litter box with holes drilled into the bottom) and plant it with potting soil, then tons of edible, fast-growing seeds. I use things like radishes, corn, lettuces, onions, and other things which grow super fast. I sprout everything and let it grow for 5-6 days, then sit the whole thing into the enclosure.
Every bird species I've met likes to peck around at the plants and the dirt. Some species will dig around (like parrots) or scratch (like chickens) and a lot (like quail, probably!) will "bathe" in the dirt as it dries out. It offers several days if not weeks of nutritious fresh food AND it helps stimulate them socially and neurologically (as does the pea fishing I mentioned above). We tend to overlook our animal's needs for psychological and neurological stimulation but these needs can almost always be combined with feeding them.
Another trick: put live mealworms in an envelope and lightly crumple it. As the worms crawl out the birds will move the envelope around and try to figure out how to get all the worms out.
Side note: this is also healthy for people to watch--it's entertaining and fun. Kids love it.
