Picky eaters
According to Dr. Candace Jones, a pediatrician in Florida, USA, it is normal for newcomers to become picky eaters.
She believes that refusing food may simply be because the child is not hungry at that time. It may also be the result of taste development and even sensitivity to food texture.

Or bang your head against the wall
The act of hitting your head can create a rhythm and bring soothing stimuli to children when they are in pain or sleepy," Dr. Jones said. Usually, it is the result of a fit of anger when young children are uncomfortable. What parents need to do right now is comfort and reassure children because it will help them adjust their emotions.
Sweeping the nose
Young children love to explore, especially their own bodies. Although picking their nose may seem normal, there may be underlying causes. Your child may have nasal itching (very uncomfortable seasonal allergy), nasal congestion (dry discharge) or nasal pain.
Fantasy game
If you notice your child talking alone, don't worry. In addition, if your child plays imaginatively and plays on their own, even when there are other children around, there is no reason to panic. Both are completely normal behaviors of young children.
Doesn't like wearing clothes
Sometimes, newborns do not like certain types of clothing due to sensory problems. Dr. Jones said that clothes that do not fit, are rough or too hot can be a sign that children refuse to wear clothes. Your child may run around without wearing anything.
Or swinging back and forth
Many parents are worried when they see their children swinging back and forth, this behavior may be a sign of autism, but in fact, it is quite common. Many young children swing to reassure themselves before going to bed. It is also a way to relax. Such repetitive movements usually stop when the child is three years old.
These are just a small part of the bizarre behaviors that parents often witness in newly-walking children. Young children can confuse us, even many times a day. But these are all normal behaviors in the development of young children.