A large portion of the habitat loss I suspect isn't actually lawns, which have been decreasing in size as suburbs have been increasing in density. Many suburbs

A large portion of the habitat loss I suspect isn't actually lawns, which have been decreasing in size as suburbs have been increasing in density. Many suburbs built since the 1990s are so tightly packed that you can't fit a car between the houses to get to the back yard, and the back yard itself is two thirds of the footprint of the house itself. What I suspect is driving it is actually pavement and development ready property. The footprint for pavement for a building is usually three times the footprint for the building itself. This includes parking lots, connecting roads, sidewalks, and even the concrete slabs needed to place things like air conditioning units or tall signage. That pavement denies undergrowth and pioneer species that small insects thrive on seasonally. It also denies water runoff. Without the water being able to saturate the ground it gets redirected to elsewhere. There's several issues with that, including unnatural subsidence and runoff pollution. The ground has some ability to naturally filter out small amounts of pollution as water seeps down through the soil and to the water table. But if there's pavement all of that water torrents to a single area which gets oversaturated. The soil can't hold any more, and so the water is rejected and pools above the surface. This is why you see so many puddles at the edges of parking lots or road intersections. This allows the pollutants to concentrate, and when the ground finally does absorb the excess water it pulls in those pollutants all the way down to the water table as they're in too high a concentration for the soil to capture. And development ready property is an actual serious problem. Companies buy real estate and then deforest and regrade it in anticipation of someone eventually buying it. They don't have a buyer lined up, they're just expecting someone to eventually want to settle there, be it a business or a home. In the meantime they keep the land stripped, with no trees or shrubbery, no native plants, and sometimes without even grass. There are places I've seen that were turned into development ready property that have sat hollow and scarred for twenty years. Even in places where there's native plants, undergrowth, and pioneer species that overcome this, the continual removal of trees makes it almost impossible for animals to stay there for long. Part of this is that with the heat island effect of nearby pavement you get constant blowing lateral winds. Winds which birds can't use as updrafts, winds which blow away rodent ground nests, and winds which scatter colonies of insects. But even if they survive all of that, the constant grooming of the land to keep it "presentable" means zero turn mowers rolling over all of that and destroying it, irrigation being dug that drains naturally forming ponds that house insects and amphibians, and the turfing that chokes out everything with fast growing non-native grasses.