For me, it's Cossie. She is so unique. She sings, hops, carries stuff in her beak, cuddles, gives kisses, and reminds me of a lovebird in terms of fluff. I've never heard of a budgie carrying anything in their beak before, and I know her hop is NOT something you see every day. That's why I call her a caique. She's just SUCH a gift, like all my other birds, but she's definitely once in a lifetime.