Bryan Pfeiffer

Bryan Pfeiffer
University of Vermont | UVM · Department of Plant Biology

Bachelor of Science - Chemistry


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Over the course of three decades, Bryan Pfeiffer has lectured and guided people in the discovery of birds and insects. As a consulting field birder and entomologist, Bryan has worked for governments, timber companies, private landowners, and conservation groups. Bryan was a co-founder of the Vermont Butterfly Survey and its principle field lepidopterist. He has netted and photographed insects from tropical forests to above the Arctic Circle. As an educator, Bryan teaches professional writing to graduate students in the University.


Publications (4)
Technical Report
Checklist of butterflies reported from Vermont, USA. The Vermont Butterfly Checklist is now comprised of 111 species in 5 families (Family:no. species= Hesperiidae 37, Lycaenidae 23, Nymphalidae 38, Papilionidae 6, Pieridae 7). Published at GBIF:
Conference Paper
From 2002-2007 citizen scientists helped to document the status of Vermont butterflies. Despite their lofty status among the insects, there was no atlas of their distribution and no conservation assessment for butterflies. Obtaining complete survey coverage of this rural and mountainous state was challenging. Participation generally followed Pareto...
Full-text available
Abstract Here we present the status and distribution of 142 species of Odonata from Vermont, compiled from historical records and a recent surge of field work. Ths marks the first such compilation for the state. We include descriptions of Vermont’s biophysical regions, a history of odonatology in the state and species accounts that feature distribu...


Project (1)
The Vermont Damselfly and Dragonfly Atlas chronicles the distribution and conservation status of 143 Odonata species across Vermont. It is also a living survey, collecting data and updating real-time distribution maps for use by researchers or the public.