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[elapid68]

Starkey,
Personally I don't fell the need to have vegies or any food for that matter in the enclosures every day. My Blues and Beardies get fed every 2nd or 3rd day. I think if you have food in there every day they start getting a bit choosie on what they eat and what they don't.
Onion?? never thought of that. How do they respond to it???
Mine get a mixture of lettuce, carrot ,apple, Brocolli, pumkin, beans, mushrooms, tinned cat/dog food and dandilions (when I can get them). The Blues also go ape over snails.

Try separating the EWD's when it comes time to feed. They might feel that they're at the bottom of the enclosures food chain and not confident to approach the food whilst the others are there.