Birds in Forested Landscapes

Birds in Forested Landscapes is a continentwide study to look at the effects of habitat - forest fragmentation, acid rain, recreation - on the breeding success of thrushes and hawks. BFL focuses on seven species of North American thrushes and two forest raptors. BFL is a breeding survey, so fieldwork starts after spring migration and wraps up before migration starts again in late summer. Observers broadcast audio recordings of mobbing calls to elicit a response from local birds, and describe the habitat at three geographic scales to help understand species' habitat requirements for successful breeding.