One-Month-Old Baby’s Growth And Developmental Milestones

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When you observe one-month-old babies’ milestones in terms of development, you will notice how a whole new world unlocks for them at this age. They develop new abilities and are more responsive, physically dexterous, and cognitively capable than when they were born. So, at the age of one month, what other developmental milestones could you expect from your baby?

Continue reading to learn more about the developmental milestones of a one-month-old infant, when to be concerned about developmental delays, and some tips to help parents aid in their development.

One-Month-Old Baby’s Milestones Chart

Achieved Developmental MilestonesEmerging Developmental Milestones
Eyes can track objects from mid-line to the sideWill track moving objects from side to side
Can lock an object that is placed in the handAttempts to swipe and hit objects within reach
Grips objects but cannot hold them in handWill hold objects for a brief period
Notices faces and people within rangeBegins to notice their hands and legs
Makes throaty soundsStarts making cooing sounds
Stops crying when held by a caregiverWill stop crying at the sight of the caregiver
Displays all neonatal reflexesNeonatal reflexes gradually disappear
Lifts head a bit during tummy timeCan lift head by 45º during tummy time
Stops crying and looks in the direction of sound or voiceWill respond to the primary caregiver’s voice with coos and throaty sounds
Moves limbs symmetrically, with very little cognizance of themWill gradually learn that hands and legs are an extension of the body
Will recognize the mother’s breast but may not tell a bottle apartCan differentiate between breast and bottle

A One-Month-Old Baby’s Developmental Milestones

There are three primary areas of development: cognitive, physical, social & emotional, with unique developmental milestones in each category.

Cognitive developmental milestones

Expects feeds at set intervals

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  1. Expects feeds at set intervals: Initially, the baby feeds any time you feed them. But when they are a month old, their body starts working by the clock, a cycle develops and they cry at specific intervals or when they are hungry. That is perhaps why babies usually cry at the same time each day, expecting a feed(1).
  1. Can distinguish tastes: A one-month-old baby will only have breast milk. Still, they notice changes in the taste of the milk when the mother eats something that could alter the taste or flavor of the milk in some way. The baby also seems to recognize the smell of breast milk (2). And know the difference between breast milk and bottle milk.
  1. Acknowledges the presence of an object or person: Hold an object close to the baby’s eyes, and you’ll find them looking at the object and maintaining eye-contact with it, thus recognizing its presence. Eye contact is extremely important.
  1. A memory of sensations and smells: The baby can differentiate a softer item from a rough, coarse one. They will display aversion towards contact with hard and rough items. There is also a preference for sweet smells and discomfort when exposed to bitter or harsh smells.

Physical milestones

Can thrust arms, One-month-old baby milestones

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  1. Can thrust arms: Thrust arms forward albeit with a jerky movement. It indicates improvement in muscle tone.
  1. Moves the limbs a lot: A one-month-old baby will move the limbs symmetrically, meaning that one limb will move the same way as another (3).
  1. Improved reach: You will notice that the baby can bring their hand to their mouth and eyes.
  1. Head flops backward when unsupported: The baby cannot yet support its head, so leaving the head unsupported when holding them in your arms or placing them in your lap can make it wobble backward. While this is not an achievement, it is an indicator of the healthy growth of the baby.
  1. Can raise or sway the head: Place the baby on the tummy, and they will try to raise their head a bit or sway it from side to side. A one-month-old baby has better neck dexterity due to developed muscles and nervous system.
  1. Rolls hands into a tight fist: Your little one can roll the hand into a fist at will.
  1. Grasp objects: Place an object in the baby’s palm, and they gradually roll their fingers around it. They also try to grasp nearby objects on their own (4).
One-month-old babies can grasp objects

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  1. Eyes can track objects: When you bring an object to the baby’s side and slowly move it towards the center (midline), the baby will be able to track the object. The same thing happens when you place the object in the center and gradually move it to the side. The eyes follow the object.
  1. Can focus on objects that are up to 12 inches away: The baby can focus on objects and faces at a distance of 8-12in (20.3 to 30.4cm) away.
  1. Sleeping time decreases by half-an-hour: The number of sleeping hours decreases from 16 to 15.5 in a day. The baby will sleep nearly the same amount of time during the day and night (5). The sleep pattern remains the same.
  1. Presence of strong neonatal reflexes: Babies display a plethora of reflexes at birth, which persist at the age of one month (6). Your baby’s pediatrician will look for these reflexes during a regular developmental check-up. The absence of these reflexes can be an indicator of developmental delay. These include the Moro’s reflex, the rooting reflex, the sucking reflex and the stepping reflex.

Social & emotional milestones

  1. Cries to communicate: The baby uses crying as a medium to communicate their pain and discomfort. They tend to stop crying the moment a caregiver holds them and addresses their need. So, if the mother picks a crying baby and breastfeeds him/her, then they calm down right away.
  1. Recognizes sounds and voices: The baby has a memory of voices and recognizes familiar sounds and voices. They turn the head towards the source. Babies also begin to make throaty noises at this age.
  1. Makes eye contact: Stand close to the one-month-old baby and they will look straight at your face and then into your eyes. The babies at this age are adept at making eye contact when a face is within the field of vision.
  1. Prefers human faces: A baby’s gaze will first settle on a face, even in the presence of several brightly colored items within their field of vision. This one-month-old baby’s developmental milestones work in tandem with the baby’s new-found ability to acknowledge a person’s eyes.
  1. Can sense and react to rough handling: If you handle the baby roughly, then they are quite likely to make their dissent clear. Despite being a month old, babies can differentiate between gentle rocking and movements that are deliberately rough and abrupt. They enjoy being rocked gently (7).

The above milestones and abilities of babies indicate healthy growth. Some red flags in the baby’s development could offset the ideal benchmarks. More about them next.

When To Be Concerned About The Baby’s Development?

According to the American Academy of Pediatrics (AAP), the following signs indicate a developmental delay in a one-month-old baby:

  1. Feeds poorly with weak latch and suction. Basically, difficulty in sucking.
  2. Does not focus on a nearby object even when you move it from side to side.
  3. Does not blink eyes or moves face away when shown a bright light.
  4. Does not respond to sound or voices even when awake and fully alert.
  5. The baby’s body and muscles seem stiff. Limbs barely move.
  6. The body feels floppy when you pick the baby in your arms. You sense nearly no muscle control.
  7. There is a trembling movement in the lower jaw, even when the baby stays still.

The US Center for Disease Control and the AAP recommend regularly screening of the baby for developmental delays (8). The baby should be seen by a pediatrician for regular development milestones. As some points might be missed by the parent. If you feel something amiss in the baby’s health, then do not hesitate to raise the topic the next time you see the pediatrician.

That said, parents can also contribute positively to the baby’s development at this stage.

How Can Parents Help In The Development Of A One-month-old?

Here is what you can do to facilitate the healthy growth of your baby:

  1. Tummy time: Allowing your baby to spend a fixed time every day on their tummy helps strengthen nearly all muscles of their body. Pediatricians recommend placing the baby on its tummy around three to five times a day, with each tummy time session lasting two to three minutes, eventually increasing the duration as they grow. This also helps in neck holding (9). Place an interesting object or toy in front of them to make this activity interesting.
  1. Indulge in activities that stimulate: Fun games and activities such as tracking an object can enhance the baby’s skills. Set some amount of time for activities each day so that your baby has adequate practice to enhance their developmental abilities.
  1. Social interactions are essential: Social interaction from early on in life helps forge the essential skills that are useful later in life. A healthy dose of interaction with caregivers and family members also ensures positive development in each area of the baby’s growth (10).

While a one-month-old baby is too little, you will be surprised to know their learning capabilities. They develop at a rapid pace and achieve many milestones. Feeding at regular intervals, distinguishing between tastes, being able to move their limbs and roll their hands to make a tight fist are some of the many milestones they achieve by the end of the one-month mark. However, know that every baby is unique and reaches its milestones at its own pace. If you are concerned about any delay, do not panic but contact your healthcare provider.


MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.
1. Developmental Milestones for Children
2. Developmental Milestones: 1 Month; American Academy of Pediatrics (2009)
3. Eisenberg, A., Murkoff, H. E., & Hathaway, S. E; A Chart of Infant Behaviors
4. Developmental Milestones: Fine Motor Skills and Visual Motor Skills; Children’s Hospital of Orange County
5. Infant Sleep; Children’s Hospital of Philadelphia
6. Newborn Reflexes; University of Rochester Medical Center
7. Developmental Milestones: Birth to 12 Months; University Of Pittsburgh
8. Developmental Monitoring and Screening for Health Professionals; U.S. Department of Health & Human Services
9. Back to Sleep, Tummy to Play; American Academy of Pediatrics (2017)
10. 8 Things to Remember about Child Development; Center on the Developing Child at Harvard University
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Rohit Garoo

Rohit Garoo did MBA from Osmania University and holds a certificate in Developmental Psychology from The University of Queensland. The zoologist-botanist turned writer-editor has over 8 years of experience in content writing, content marketing, and copywriting. He has also done an MBA in marketing and human resources and worked in the domains of market research and e-commerce. Rohit writes topics...
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Dr. Mubina Agboatwalla

Dr. Mubina Agboatwalla is a well-known pediatrician, practicing paediatrics since the last 20 years in Karachi Pakistan. She is the head of the department of Pediatrics in Karachi Liaquat Hospital, as well as her private practice in three specialist clinics in Pediatrics. She is also a Public Health Specialist specializing in preventive health including nutrition, breastfeeding and infectious diseases especially...
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