Particles seem to be over/on top of each other?

hi, I am making a birds in sky particle emmiter, but I have a problem.

the issue is that: the birds in sky is a particle emmiter cuz there’s no point putting a bunch of detailed meshes high up in the sky, so I made the particles lock axis. But the particles seem to go over each other, and that won’t help the illusion of 3d modeled birds in the sky.
Screenshot 2022-08-11 095626