Whole mung beans are available at supermarkets - especially asian and spanish markets.  Bean sprouts common use in asian recipes - excellent food for you and  your feather friends.

1. First - Gently wash the bean - rise - then soak them in warm water for no more than 12 hours or they will rot.
2. Grain them well - and place them in a jar or a bowl - then cover them with a moist cloth
3. Bean spouts are ready for your birdies the next day

Where to buy

 China prairie - Sprout instructions and supplies

bean sprout

1. How to Grow Bean Sprouts