Assuming those painful sounding chirps are simply the sounds a tiny bird makes whenever it is super warm, you continue to sit on the baby bird. It continues to screech and cry and make horrible noises that only a dying creature could make.
Then you realize that sitting on a bird is a terrible idea.
You get off the baby bird to see it is now quite flat. It is not moving or making the sounds anymore.
You squished a baby bird.
You choose to…