I'm not sure I can pick a favorite...I think I will do "category" favorites.
My favorite big chicken(8weekers) is my cockerel, Sparrow. He is an Ameracauna, with a jet black head and neck, steely grey feathers elsewhere with carmel colored ones mixed through his body. He is SO sweet, I think he is going to become my house chicken...he is very dysfunctional with most of my other chickens.
It would suit him, too. We watch tv together and I take him around the house. He switches over to peeping when I'm handling him, instead o f his usual big rooster voice.
My favorite medium-size chicken(5weeks old) is my bantam Barred Rock pullet, Pickle. She is so sweet, she flies up onto my hand every time I take the screen lid off of her brooder.
My favorite tiny chick(3 1/2 weeks) is an Ameracauna called Carmen. She is so sweet and just wants to cuddle. She loves to stick her head inside the collar of my shirt and fall asleep when I'm holding her.
My favorite duck is my crested Fawn colored Blue Swedish(??very odd looking duck, need to post an updated picture) named Admiral. All my ducklings are friendly, but her and my KhakiCampbell drake, Truffle, LOVE to nibble on the hem line of whatever I'm putting on as bottoms. And then, they have to nibble on my hands afterward, it's like a dressing ritual.
I can't pick a favorite between my 2 White Chinese goslings. TanTan and DaPengyou are both super sweet and love to be hugged and talked to!