A person who studies the behaviour of earth and all that is on and in it.

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.

discriminatory especially on the basis of ones planet of origin.

a human with a prejudiced belief that Earth species (specifically humans) are superior to extraterrestrials.

Based on intolerance of extraterrestrial species.