Wow, so you have to kind of 'double handle' or whatever when it comes to switching you have to transfer twice. And since I read that yours are eager to get OUT of the cage, the large doors that I love might not be so good for your birds!
Exactly. With the budgies we have the bus so it is working quite well, the step into the bus and I can get them easily from there, but putting them inside the carrier through the top door and keeping them inside while I take my hand out and close the door is tricky.
With Pichu, I have to catch him when he doesn't expect it, or in the dark, which is really a break of trust in my book and I don't like it. But he won't go inside any of the carriers on his own so there..
Big door is OK on my blue/textile carrier since it closes with a zipper, but the little bugger is smart and he knows where my hand creeps in and out, he can creep in and out too...
As for the hopping, I could still hop if I really had too, but yeah, not getting any younger here either...