Oskar Heinroth

Oskar Heinroth
Born	(1871-03-01)1 March 1871 Mainz, Germany
Died	31 May 1945(1945-05-31) (aged 74) Berlin, Germany
Known for	Applying methods of comparative morphology to animal behavior
Spouses	Magdalena Heinroth née Wiebe, Katharina Heinroth née Berger
Scientific career
Fields	Pioneering ethologist
Institutions	Berlin Aquarium

Oskar Heinroth (1 March 1871 – 31 May 1945) was a German biologist who was one of the first to apply the methods of comparative morphology to animal behavior, and was thus one of the founders of ethology. He worked, largely isolated from most other scientists of the period, at the Berlin Aquarium where he took care of fishes, reptiles and birds, especially waterfowl.