You can’t see them in this picture, but there are thirty-five or so Horned Lark on the ground here at the northwestern corner of Floyd Bennett Field. One of the few open ground bird species on the East Coast, Eremophilia alpestris breeds at the tundra top of North America. The Lower 48 are their wintering ground. Grassland species like this are becoming rarer because grasslands are becoming rarer. This is actually a cricket field.
While a forest is obviously a forest and a swamp clearly a swamp, a grassland to the short-sighted is often no more than an empty space, a waste land, ripe for something else.
Landing in Albuquerque, NM, some months ago, I saw a prairie dog from the window of the plane as it taxied. Airports preserve grasslands by default. Floyd Bennett Field, built atop the waste reclamation factories of Barren Island, was NYC’s first airport. After decades in military service, Floyd Bennett became part of Gateway National Recreation Area. Some of its grasslands are being restored and maintained, but threats of development (casino! NASCAR! fairgrounds! etc.) ever abound.
After all, to a lot of people, it looks like nothing is going on in this field…
And in winter things do look still. But yesterday, I watched a female American Kestrel hunting here. She was hovering, facing the wind with her tail fanned out, her wings beating. She can stay relatively motionless like this in the air as she scans the ground for food. Pickings are slim this time of year, of course, but these raptors can go several days without eating. She made several drops to the ground. Back in the air at one point, it looked like she transfered something from talon to beak. I wonder what it was? Kestrels are our smallest falcons; in summer, they eat insects (grasshoppers, dragonflies, moths etc.), generally plentiful in grasslands, as well as amphibians and reptiles, small mammals, and small birds. In winter, prey choices are reduced to small mammals and birds. 
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