Desiree Early Dorvall , a biologist for Green Diamond Resource Company, uses live bait to attract northern spotted owls in order to watch where they go and to whom they deliver food. Often an owl from a mated pair will take the mouse and fly to its nest site, a process that helps biologists keep track of owl populations and land use. And makes it possible for biologists to catch and band owls. This owl exists on a parcel of timberland owned by the timber company in Blue Lake, Cali.. They are among one of the companies actively trying to protect owls on their land.