Yes, actually, I have noticed the decline locally. I'm lucky that I still have some, but nowhere near as many as there used to be. Every time a fencerow or old farmyard is torn down, the population of local birds immediately drops. It's not just the loss of habitat they need to live in. It's that they hop from one clump of trees to another over the barren-to-them cropfields. The fewer "islands" of habitat, the fewer birds can travel and the less far they go.
Allow me to reiterate how stupid it is to be tearing down trees when the world is getting hotter and the storms are getting wilder. We need more, not less.