Pigeon

Pigeons were a species of bird native to the planet Earth.

In 1943, pigeons were used to test a new chemical weapon planned for use in destroying Russia's government after World War II ended. (TV: The Curse of Fenric)

The First Doctor declared that he had "the directional instinct of a homing pigeon." Later, Barbara Wright and Ian Chesterton encountered a large flock of pigeons in Trafalgar Square. (TV: The Chase)

The TARDIS startled a flock of pigeons when it materialised in Fitzroy Square in 1966. (TV: The War Machines)

Anji Kapoor deduced she was not in London as there were no pigeons. (PROSE: EarthWorld)

Frobisher once took on the form of a pigeon but found himself attacked by an owl. (COMIC: The Shape Shifter)

The passenger pigeon was a type of pigeon, and was worth 100 points in the I-Spyder Book of Earth Creatures if it was spotted. (PROSE: The Last Dodo)

The Eleventh Doctor adored carrier pigeons. Major Alec Palmer once did a military operation involving carrier pigeons. (TV: Hide)

Clara's Gran met her future husband under circumstance that somehow involved a pigeon. TV: The Time of the Doctor