Which of the following is NOT a normal finding when examining a newborn's ears?

The presence of blood or fluid behind the tympanic membrane is not a normal finding when examining a newborn's ears. Normally, the tympanic membrane should appear intact and clear, signifying that the middle ear is healthy and free from infection or fluid accumulation. The presence of blood or fluid can indicate conditions such as otitis media or a traumatic injury, which requires further evaluation and potential intervention.

In contrast, a movable membrane without bulging indicates an intact and functioning eardrum, which is typical in healthy newborns. A clear auditory response to loud noises demonstrates the newborn's ability to hear, which is another expected observation during an ear examination. Lastly, the normal developmental location of the auricle refers to the ears being positioned at a normal height and angle relative to the head, an important aspect of physical examination in newborns. Each of these findings aligns with normal ear anatomy and functionality in neonates.