Head lice generally like a dark, warm place. They tend to congregate behind the ears or above the nape of the neck. Since they gather there, they tend to lay their eggs there. If you have a child that wears ponytails or any hair that is clumped together, look at the base of that area. Lice do not always stay in those areas but they are most commonly found there. See the graphic below for ideas on where lice and nits may most likely be found.