It seems like greys are like kids... they just like stuff or they don't. I would just keep offering them and he may change his mind. Have you tried all the varieties? There are some nuts Timber doesn't seem to like. If you haven't tried pine nuts, try those. That is a favorite around here. Did you try offering nuts shelled and unshelled? Sometimes they have a preference one way or the other. Timber will eat an almond in the shell (I crack off the end) but doesn't care for unselled ones. At any rate, just keep trying which is all any of us can do.
I'm not sure where that was going, Nancy will have to address what she meant. However, I have a question. Where do you get your palm nuts? mysafebirdstore.com has been out since I've been checking!
Loved the video! They are so funny when bathing. I use a 9 x 13 heavy glass baking dish for Timber, and he spreads his wings and dips as much of himself in as he can, head first. I sure wish I could get a video of it, but Timber just stands there and stares at me every time I get the camera, and even my phone.
If you could get it to crack in half she would still enjoy digging the meat out. I try to crack Timber's enough to get him started. The walnuts are too big for him to get a good grip on (he's a TAG).