He worked on the birds collected by Johann Natterer in Brazil (343 species). He has been married to Renate Natterer since 1967. Brettstapel was invented in the 1970s by the German engineer Julius Natterer. Joseph Natterer Sr. was the last mounted falconer of Austria. August Natterer died of heart failure in an institution near Rottweil in 1933. In 1975, Natterer proved pointwise convergence of finite element methods.