Oh hand fed HUMAN FOOD, the girls will worship you for that, just like the rottentoo shows off when he thinks he can mooch a snack when im cooking. I have a super powerful blender and sometimes make myself smoothies. Im not all into the germ grain, tree hugger poofter drinks made of yak urine and sasafrilly pollen elbows or some crazy stuff, but ill do up some berries and things. I will try different greens, like a prep for making teas, and other concoctions. occasionally Ill get one that taste really horrid. HEALTHY - but horrid. I have YET to find a drink that neither the Too or the Yard Birds would not drink.
With that being said, no YOU might not like ground up black sunflower seeds whole, but there are a lot of good stuff we put in bird food, that we can eat too. Ill often do that as a bonding with the cockatoo. Make a drink and sit and share it with him. The girls are much less choosy but I can see them come running w hen you got snacks for them too.
Aaron