vype...like anything you dont try just once...it took Cappy 8 MONTHS to try his first veggie and that was offering him many things EVERY DAY...done different ways...they will go for the leafy green veggies quicker...but you sometimes have to try them MANY ways ..cooked..semi cooked..raw...diced really teeny and again...like toys you have to show them what to do...make believe your eating the veggies just dont give up but do make sure to have something EVERY day available...and SHOW the bird make believe eating it every time also...

his first veggie he decided to try was brocolli florettes raw...he hated anything cooked mushy... now tho he doesnt mind somethings mushy that he didnt like before...took the longest time with him to do carrots...baby spinach...brocolli florettes...kale...chinese bean sprouts plain cooked pasta ...there is so many things dont stop with one thing after only one day.
save this website its the best list ive ever found on all things safe and non toxic and things toxic...
http://www.parrot-and-conure-world.com/non-toxic-for-birds.html