Most of the other goblins were loud and noisy and confused about what to do. Some had banded together with others out of a desire to improve their odds or had brow beaten others into following them. Some were even going around, helping out those who were a bit less developed by providing them with food and water from the somewhat limited supplies. 

Hunger was not new to Gredy; Even as he slept, he dreamed of being something that wasn't a goblin but the hunger remained. That needed to change. Sitting by himself while others did their own things, he had instead focused his efforts on taking a reasonably hand sized rock and using another rock to chip away at it, giving him a edge to stick in something and giving himself a better grip on the non-stabby end. Even has he had done so, other hunting parties had left but he had re-framed from joining them until he had a means of causing damage. 

With his makeshift dagger complete, he quietly made his own way towards the entrance of their home. While one could make the argument that there was strength in numbers, the other goblins were rather loud and he wanted to be sneaky; Being loud would alert whatever was nearby and they would either be on their guard or run away before he saw them. He wanted to avoid that, because if hunting the insects in the cave had taught him anything, it was easier if they weren't actively trying to escape or bite you.