At what age can an infant typically lift their head when placed in a prone position?

An infant typically develops the ability to lift their head while in a prone position around the age of 2 months. At this stage of development, babies gain some control over their neck muscles, allowing them to raise their heads to a small degree when lying on their stomach. This milestone is a significant aspect of neck and upper body strength, which later contributes to further developmental skills like rolling over and sitting up. By 2 months, infants may be able to lift their head approximately 45 degrees from the surface, demonstrating the beginning stages of gross motor development and strength. This capability is closely observed by pediatricians to assess the baby's growth and motor skills during routine check-ups.