The Tufted Titmouse is "a species in the tit and chickadee family (Paridae)." - Wikipedia. In the pecking order at the feeder the chickadee is the lowest and then comes the Titmouse being slightly larger. Nuthatches slip in next. Woodpeckers stay to themselves. The tits are categorized in sizes A, B, and C, rarely do you see a D. The peckers and nuts are usually checking out the tits.