How was doodle found when he was died from The Scarlet Ibis?

in the Scarlet Ibis, Doodle's brother is mad at him and as the thunderstorm starts to come in his brother runs fast knowing his brother is incapable of keeping up. Doodle yells after him " Don't leave me brother, don't leave me." He picks up his pace and the Storm came harder, his brother ran back to get Doodle but it was too late. His brother noticed he was bleeding in the mouth.

he became too cold and the doctor told the family he can not be too cold or warm.