
Babies are a box of surprises. Although we've all gone through this stage of life, the truth is that there are many aspects of the behavior and development of newborns that are surprising even to experienced parents. From basic bodily functions to complex involuntary reflexes, every aspect of their development holds interesting facts worth knowing.
In this article we present a detailed tour of the stages of child development During the first months, their incredible sensory abilities, their most characteristic reflexes, the reasons for many of their behaviors, and some tips on how to properly accompany and stimulate this process.
The first days: an intense adaptation to the new world
After birth, the baby experiences a radical change. He leaves the maternal womb—a warm, humid, and protected environment—to face the outdoors, intense light, and direct physical contact. This transition manifests itself in a surprising state of alert which takes place during the first few minutes, during which the newborn remains with his eyes open and responds to sensory stimuli.
During this initial stage, babies They calm down easily with the presence of their motherThey recognize her by her sense of smell and her voice, which they had already heard in the womb during pregnancy. This first emotional bond is key to emotional and brain development.
The world through the senses of the newborn
During the first few weeks, babies' senses are especially developed. They are their primary tool for gathering information about their surroundings. Let's see how each one works:
- Ear: Babies recognize familiar sounds, especially their mother's voice. From the first month on, they can turn their heads to find the source of the sound.
- View: Although they are born with very limited vision, they can see at a distance of about 20 or 30 centimeters. They are better at detecting contrasts and faces, especially those with expression. Color vision develops between 4 and 6 months.
- Smell: Extremely developed at birth, they can distinguish their mother by scent within a few hours of birth, which helps them feel secure and locate the breast for feeding.
- Taste: They are born with many more taste buds than an adult, which makes them highly sensitive to flavorsThey have a predilection for sweet things.
- Touch: It's one of their most important senses. They enjoy physical contact, massages, and caresses. Skin-to-skin contact with their mother stimulates bonding and milk production during breastfeeding.
Primitive reflexes: reactions that impact
Newborns exhibit a series of automatic reflexes that help them survive and adapt to their environment. These reflexes often disappear over time, and some transform into voluntary skills. The most representative are:
- Moro reflex: The baby extends his arms and legs when he feels he is falling or hears a loud sound, and then hugs himself.
- Search reflex: Turns his head toward the stimulus when his cheek is stroked. This is key to finding the breast.
- Suction reflex: Automatically sucks any object placed in its mouth, essential for feeding.
- Walking reflex: If you hold him with his feet on a surface, he will appear to be trying to walk.
- Palmar grasp reflex: Automatically closes your fingers when something is placed in your palm.
Stages of physical and motor development during the first year
Growth milestones are different for every baby. Some advances come early and others later, but they all follow a more or less predictable order:
- 0 to 2 months: He lifts his head briefly, flexes his arms and legs, and follows objects with his eyes. Some primitive reflexes are still present.
- 3 to 4 months: He improves eye control and begins to coordinate movements with his hands. He can lift his torso when lying face down.
- 5 to 6 months: Begins to sit unaided, rolls over, grasps objects with both hands.
- 6 to 9 months: Crawls, sits firmly, begins to stand with support.
- 9 to 12 months: Takes steps with support, can walk a few steps alone, and maintains balance when standing.
Language, communication and emotions
Crying is their first language. From the very first hours, babies use specific sounds to express needs, such as hunger or discomfort. Around three months, chirping begins, and later, first syllables such as "ma" or "pa," although they don't yet associate these with their parents.
By the fourth month, many babies begin to imitate sounds and facial expressionsThis demonstrates an early form of social interaction. By the age of one, many already respond to simple commands like "no" or "come here."
Surprising curiosities about babies
- They cry without tears: Although they express intense emotions, their tear glands are not yet fully developed, so they do not produce real tears until they are 15-20 days old.
- They have more bones than an adult: They are born with about 300 bones, many of which will eventually fuse to form the 206 adult bones.
- Swimming reflex: During the first 6 months, they may instinctively hold their breath and move their arms and legs while in the water.
- Early olfactory memory: They are able to recognize their mother's smell a few hours after giving birth.
- Eye color change: Babies born with light-colored eyes may experience a color change during the first few months due to melanin.
Behavior and sleep patterns
Newborns do not distinguish between day and night. During their first months, Sleep occurs in cycles of 30 to 50 minutes, sleeping 15 to 18 hours a day, in blocks interrupted by feeding. By 4 months, they achieve a period of 5-6 hours of continuous sleep.
Each state of consciousness influences their behavior: from peaceful sleep, agitation, passive alertness, active alertness, to active crying. Most babies transition smoothly from one state to another if their nervous system is healthy.
Feeding and lactation
During the first few weeks, babies need to eat every 2-3 hours. Breast milk is the ideal food and provides immune defenses. They often fall asleep during feeding, as the sucking is very demanding for them.
They may also experience colic. This usually disappears after the fourth month. If the baby is not gaining enough weight, the pediatrician may recommend combining breastfeeding with formula.
Basic care and warning signs
It's important to be mindful of your health, hygiene, and safety. Some key tips include:
- Change diapers frequently to avoid discomfort.
- Avoid small objects that can be put in the mouth.
- Putting the baby on his back to sleep and prevent sudden infant death syndrome.
- Avoid carrying the baby while handling hot drinks.
Consult your pediatrician if you observe signs such as lack of response to sounds, lack of eye contact, difficulty feeding or a setback in the development achievements made.
The behavior and development of a baby in its first months of life is a fascinating mix of instincts, amazing capabilities and constant changes. Understanding how their reflexes work, which senses are most developed, and why they sleep a certain way helps us better support them during this very special stage. With patience, attention, and lots of love, we can meet their needs and enjoy every little bit of progress.



