Pigeon

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

They were utilised as carrier birds in the Holy Land. By 1400, having witnessed their use during the Crusades, the English imported this tactic. (AUDIO: The Doctor's Tale)

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". (TV: The Chase) The Sixth Doctor later made the same claim. (AUDIO: Vampire of the Mind)

In 1965, 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)

In an alternate timeline created by the Chronomasticon, Earth was taken over by mutant pigeons. (PROSE: Playing for Time)

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 Oswald's gran met her future husband in circumstances that somehow involved a pigeon. (TV: The Time of the Doctor)

On the day he died, Donald Babinger shared bits of his cheese sandwich with a pigeon. (PROSE: Apollo 23)

According to the records kept by the Veil, on the 83rd day of the 235th year the Veil and the Twelfth Doctor spent inside the confession dial, a pigeon somehow made its way into the castle; when the Doctor asked if "there [were] birds here", a commotion up in the rafters answered him. Neither inhabitant of the dial ever saw the pigeon again, nor figured out where it had come from. (PROSE: The Veil)