If the race's alignment is "Always This", then it's this. (So, a red wyrmling is chaotic evil.)
If it's "often" or "usually", then alignment is cultural rather than metaphysical. It would be True Neutral at least for the toddler period, when the baby, unable to speak, can be considered like an animal. (Even if it is more intelligent than animals.) Once the infant is able to speak, even a few words, you can assume he or she has developed his/her thought patterns enough to develop also his/her first moral and ethical position.