I used to notice, when I was a midwife, the differences in the way little new beings were present in the world and in how that changed in the following days, weeks, months. Sometimes the little one would be as if still asleep at first, like a tiny quiet dormouse, not really here yet. A few days later, someone had arrived, eyes open and full of depth and curiosity.
Other babes roar into existence outside their mums. I recall a new person shouting at me when only her head was born and we were still waiting for the wee body to come forth. I used to wonder about these differences.