We decided to name our chickens colours. Each "batch" of chicks that we raise will be different colours. First batch, I chose purple names because purple is my favourite colour - so we have Magenta, Lilac, Amethyst and the twins Indigo and Violet. Orange/Yellow names - Saffron, Goldy, Sunshine, Honey, Ginger, Pumpkin and Amber. Red - Russet, Ruby, Scarlet, Garnet, Poppy, Burgundy and Cherry. Green - Basil, Kelly, Forest, Veridian, Olive and Emerald.
You get the picture. I like themes. I've seen chooks named for surnames of famous authors, songs, bands, gemstones, foods. I got the suggestion to name them after chicken dishes like kiev, schnitzel, satay, stirfry, roast or egg dishes like omelette, scramble, frittata, quiche, meringue and souffle. I used to have 3 guinea pigs - a brown, a orangy one and a black one named Peanut Butter, Marmalade and Vegemite.