Biologists are marking the underside of flight feathers or tail feathers and banding with colored and numbered leg bands. They want people who spot these marked birds to email details to Mark NOHA(at)gw.dec.state.ny.us.
Survey locations include the Washington County Grasslands, Coxsackie Creek Grassland Preserve in Greene County and Shawangunk Grasslands National Wildlife Refuge in Ulster County. Sightings in other areas are also sought.
Northern harriers, formerly called marsh hawks, hunt in grasslands mostly for rodents. They're 16 to 24 inches long with a long tail, yellow legs, a white rump patch and wings held in a shallow "V."
Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.