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Friends of the Refuge Staff


Bonnie Anderson, has worked for the Friends of Tualatin River National Wildlife Refuge since 2010. She is takes care of the day to day responsibilities of the organization including payroll management, grant management, government contract management and grant writing. Bonnie serves on several Friends' committees, including Membership, Outreach, Branding and Development, Nature Store, Restoration, Website, Social Media, Newsletter, Summer Nature Camp, Human Resources and Hiring and Annual Budget Review. Bonnie also co-Chairs the Tualatin River Bird Festival.

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Natalie Balkam is the Friend’s Habitat Restoration Specialist. She will be coordinating the second Saturday work parties in addition to a variety of other biological work. Natalie is a Portland native, and graduated with a degree in biology from the University of Puget Sound. Since graduating, she has worked seasonal jobs conducting plant monitoring in Alaska and Nevada, and most recently worked for the refuge under the Mt. Adams Institute.



Andrew DelGreco is the Friend's Interpretive Program Coordinator. He works closely with volunteers to provide front desk services at the Refuge Visitor Center, coordinate interpretive programming and training on the Refuge, and manage outreach programs in the community. A native of Massachusetts, Andrew began his career as an interpretive park ranger at Mount St. Helens, and was inspired by the landscapes of the west. Since then he has worked connecting people to nature and to inspire conservation action through organizations like the Audubon Society, Oregon Zoo, and a variety of government agencies. 

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Nathan Kossnar is the Friend’s Invasive Species Technician who was brought on to assist the biological and restoration goals of the Tualatin River National Wildlife Refuge.  As a Chicago native, Nathan moved to the Pacific Northwest in 2014 and completed a B.S. in Environmental Science and Management at Portland State University.  Since moving to Portland, Nathan has worked for Columbia Land Trust and Clark County Vegetation Management helping monitor and treat invasive species in order to protect sensitive PNW habitats.  When he’s not doing fieldwork, he can be found hiking on local trails with his dog, Wyatt.

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© Friends of Tualatin River National Wildlife Refuge
    19255 SW Pacific Hwy
    Sherwood OR 97140

We are a 501(c)(3) non-profit organization dedicated to supporting the mission of the Tualatin River National Wildlife Refuge 

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