Mike Krzywicki is an ornithologist working in western North America. He studies breeding and migratory songbirds in Montana, USA as an Avian Ecologist at the University of Montana Bird Ecology Lab, and wintering birds in Sonora, Mexico as Director of Navopatia Field Station. This the third in a webinar series on bird monitoring, bird banding and demographics co-sponsored by the Western Bird Banding Association and IBP.