My baby has lumps near behind her neck. i can describe it like the lumps on the chickens neck (if you know what i mean).

Probably lymph node: There are several lymph glands located within the structures of the neck & will vary in size from the size of a pea to much larger if stimulated.When stimulated they can enlarge quickly and feel tender to touch or compression. A visit with your dr during regular hours should separate the simple transient issues from those needing further tests.