Experiences from mapping birds Colin Bibby BirdLife International.
Changes in the breeding distribution of Buff-breasted Flycatchers in the southwestern United States: the role of fire suppression. Chris Kirkpatrick &
Population Size and Winter Distribution of Eastern American Oystercatchers An Evaluation of Aerial Surveys To Meet the Monitoring Goals of the U.S. Shorebird.
Population Size and Winter Distribution of Eastern American Oystercatchers
Chris Kirkpatrick & Courtney J. Conway USGS Arizona Cooperative Fish and Wildlife
