I am pretty sure that the atmosphere keeps the oxygen and light in it
Juan, who is a inflexible child with low activity level and tends to withdraw from new situations. would be characterized to have slow-to-warm up type temperament. These children are uneasy or cautious in new situations or with unfamiliar people and may have a difficult time with changes like a new child care provider for example.
A because Tribune were responsible for many administrative’s and logics duties.
I believe the answer is: They thought it was animals.
At that time, the colonists still haven't been familiar with the local tribes in that area. By the time they realized that that the sound came from the native (as some sort of war cry that they do to initiate an attack) , it's far too late for them to run away.
