In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

Example input: The Inheritance Cycle is a series of fantasy books written by Christopher Paolini.
Example output: The Inheritance Cycle is a tetralogy of young adult high fantasy novels written by American author Christopher Paolini.
Example explanation: The output sentence elaborates on the input sentence without changing its general meaning e.g. "tetralogy of young adult high fantasy novels".
Q: The feral domestic pigeon is often called the " rock dove " : it is common in many cities .
A:
The species most commonly referred to as " pigeon " is the species known by scientists as the rock dove , one subspecies of which , the domestic pigeon , is common in many cities as the feral pigeon .