assuming that this is the sentence you're referring to :
Sentence 1: As I turned onto Bryce Road, I saw the Parkers’ cat crouched under a tree, hissing at something on the ground.
Sentence 2: I decided to ride my skateboard to school this morning.
Sentence 3: I shooed the cat away and called my older stepbrother, a veterinarian, because he would know just how to help them.
Sentence 4: Approaching the cat, I noticed that a nest full of tiny birds was on the ground; it must have fallen from a branch.
The most logical way to sequence these into logical narratives would be :
Sentence 2 , Sentence 1, Sentence 4, sentence 3