It's not about "climate change", it's about the loss of farm fields in the Northeast. Raggedy pasture is not much of a thing anymore. Pastures are back to woods, or to suburban sprawl, so these species are dropping in population.
When I was a kid, I would hear Bobolinks singing all the time during their migration from Argentina to the north. Spink spank spink.
Another pasture bird is the Eastern Meadowlark. Neither of these like lawns, but prefer 1000s of acres of hayfields and pastures.
Both of these birds are in the Blackbird family.