Portland, (Timber Press), (2021). An impressive and informative journey of 10,000+ miles, on a bicycle, from Mexico to Canada and back, following the monarch butterfly migration, from March to November, 2017. Signed by the author on a half-title bookplate. Small lower board edge bump; still fine in a fine dust jacket. Although monarchs have established themselves elsewhere, the migration has become imperiled by habitat destruction, a threat Dykman refers to as "the extinction of a phenomenon." [#035125] SOLD