Avian Radar Project
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The Radar Team

A Group of Biologists Committed to Studying Migration

Radar Team PhotoBeth Rigby, Jeff Gosse, Michael Wells, Nate Rathbun, Kevin Heist, and Erik Olson.

Photo by USFWS

GLRI Funded Project Project funded by the Great Lakes Restoration Initiative. Photo by USFWS




















To contact us about the project, please email Beth Rigby at elizabeth_rigby@fws.gov


Team Leader

Beth Rigby, PhD.

Beth has assumed the leadership role on the radar team after Jeff Gosse's retirement. She has helped with data analysis of radar data in the past and will help lead the Radar Team into new areas and with new applications.

Michael Wells


Radar Team of Fish and Wildlife Biologists

Michael Wells Erik Olson Nate RathbunMichael Wells

Photos by USFWS


Kevin Heist, PhD.

Prior to joining the USFWS, Kevin worked with the Avian Radar Project analyzing bat acoustical data as part of his graduate work at the University of Minnesota. Kevin officially joined the radar team in October 2016, and he has been working on the collection, analysis, and reporting of both avian radar and bat acoustic data.


Erik Olson

The resident GIS expert, Erik makes the maps for the project, helps with siting and spatial analysis, and assists with the large IT load that the project needs.


Nathan Rathbun

Nate splits his time between the field and the Regional Office and thus is involved with a variety of activities. He maintains the radar units when in the field, works with SQL, conducts data analysis, writes reports, conducts outreach, and created this website.


Michael Wells, PhD.

Mike completed his PhD. in avian biology at the University of Minnesota and came to work with the Radar Team in 2016. He is involved in data analysis, data collection, modeling, and integration of radiotelemetry and radar data.


Former Radar Team Members

Tim Bowden Becky Horton David Larson Dan Nolfi

Photos by USFWS


Tim Bowden

Tim maintained the radar units for two seasons before transitioning to the Regional Office, where he lead data analysis and report writing. He now works for the Bureau of Land Management in California.


Rebecca Horton

Becky spent a great deal of time in the field with the radar units and honed her skills in GIS for continued and specialized data analysis in the Regional Office. She now works for the State of Minnesota as a biologist.


David Larson

David maintained the radar units during the first seasons of the project and continued to stay involved with the project up through his recent transition to working as the Assistant Regional Energy Coordinator for Region 3. He has now retired from working with the USFWS.


Dan Nolfi

The bat biologist of the team, Dan spent most of his time in the field maintaining the radar units and working on data from the acoustic and ultrasonic monitors. Dan continues to work with the USFWS but is now located in eastern Idaho.

Jeff Gosse

The vision for this project was conceived by Jeff and a few other members of the Regional Office in Bloomington, Minnesota. The effort they put in to acquiring funding for the project through the Great Lakes Restoration Initiative allowed this project to move off of the drawing board and into reality. Jeff recently retired but previously worked as Regional Energy Coordinator.


Last updated: April 20, 2018