There was no end to these birds! It felt like every time he crushed one, another one pours out from the hole. Killing them was easy no matter what form Peter took, but that hardly mattered due to how many there were. It was like trying to kill a swarm of flies one at a time. Sofia was at least alive and patching herself up, but Peter was running out of Stamina. Between moving around in his boulder form and occasionally going out to help Sofia, taking hits in the process, he knew he'd run out of steam before the birds thinned out. If he was by himself he could just sit there in boulder form while these birds wouldn't be able to hurt him, but he needed to keep everyone safe. Those birds could ignore him if they couldn't hurt him, or worse go after everyone else.

[color=f7976a]"Sofia! We need to get out of here, find the one controlling these birds! If we can knock him out or something that should at least keep the birds from hurting the others, just tell me when you're ready to go!"[/color] Peter kept smashing up as many birds as he could. If he could've he would try to block up the hole with his boulder form and prevent the birds from coming through it, but that wouldn't stop the swarm that already came through. Still Peter would try and fight them and once Sofia was ready he would quickly shift back into normal form before turning into a softball size stone for her to easily carry while flying. Not to mention it'll make it easier for Peter if/when she throws him at something, as he can control his decent in sphere form the easiest. He knew there were more aerodynamic shapes but he didn't know how to form those yet. 

[@Mangrale]