I have to assume they can taste in some fashion, maybe not the same as us, as they definitely have food preferences.If what I heard is true that chickens do not have taste, then I wonder how they distinguish good from bad, what to eat and what not to eat.
Meanwhile, I have tried five or six different vegetables--beets, cucumber, egg plant, carrots, bananas--so far they won't touch anything, and these things are still uneaten the next day. I'm wondering how I can vary their diets if they are rejecting all the vegetables I offer. Just keep trying?
Yes, just keep trying. If there's something specific you would like them to eat (like you grow a lot of it) then offer that as the only treat item until they try it and either reject it or begin eating it. Once you know if they'll eat it or not, then try the next one. Obviously continue to offer them whatever grain mix (corn, mixed grain, etc.) you're regularly feeding as usual.