David Kollen is a Xerces Society Ambassador, an Oregon Naturalist and Master Melittoligist.

David Kollen of Brookings, Oregon has been a steadfast Xerces member for over 20 years. A retired tech executive with a degree in physics, Dave is dedicated to digging deep into the world of invertebrates. Since 2019, Dave has been involved in volunteering as a community scientist for Xerces’ Bumble Bee Atlas, where he and other volunteers contribute to research by conducting surveys for bumble bees. Dave most recently became a volunteer Xerces ambassador and now plays a key role in helping introduce new folks to the community science efforts by giving educational presentations. Dave says, “I've become very aware of how much need there is for outreach in our communities. If I can in any way inspire others to help out, that would be gratifying.”
Dave is a Xerces Society Ambassador and in that role is involved in educational and outreach work. Additionally he is an Oregon Master Naturalist and Master Melittologist Apprentice. His involvement in community science includes the Pacific Northwest Bumble Bee Atlas, the California Bumble Bee Atlas, and the Oregon Bee Atlas. Dave also writes pollinator-focused articles for the Oregon State Federation of Garden Clubs newsletter, Mahonia.