Translated by Gustavo Artiles and Alex Patterson In his brief prologue to Stelzvögel, professor Franz Klamm explains that Dr. Ludwig Boitus travelled from Gottingen to Huayllén-Naquén with the sole purpose of studying in situ the assimilative attraction of the long-legged bird popularly known as calegüinas (this name has almost unanimous acceptance in the specialist literature in Spanish and it will be used here). Stelzvögel fills an acute gap in our knowledge of the subject. Before Dr. Boitus' exhaustive…