Simplify the following text for a Grade 6 native English-speaking person.
Original: Hume was able to communicate with some aborigines they met early in their journey who consented to act as guides , and later , when the aborigines left them , Sturt speaks with appreciation of Hume 's ability in tracking their animals which had strayed .
Simplified: Hume was able to talk with some aborigines who agreed to help them on the journey .