The light pollution theory is b*llocks. I live in a village, in the middle of the countryside.
What light pollution?
The explanation is simply the Earth wobbles as it rotates, we’re in the middle of the wobble that brings us ever so slightly closer to the sun.
Hence warmer temperatures, lighter mornings, early singing birds, etc.
Global warming is fake.
I’m also not a chav, so I don’t refer to women as birds.