1) Animal scientist 2) Blue Moon lyricist Hart 3) Broadway lyricist Hart 4) German boy name 5) German surname 6) Hart of broadway 7) Hart of Rodgers and Hart 8) Konrad lorenz 9) Konrad zacharias lorenz 10) Lyricist hart 11) On Aggression author 12) Pal Joey lyricist Hart 13) The Hart of Rodgers and Hart Found on https://www.crosswordclues.com/clue/lorenz
Konrad Lorenznoun Austrian zoologist who studied the behavior of birds and emphasized the importance of innate as opposed to learned behaviors (1903-1989) Found on https://www.encyclo.co.uk/local/20974