Nightingale
From Tardis Wiki, the free Doctor Who reference
Nightingales were a species of bird native to the planet Earth.
The First Doctor once claimed that his singing "[charmed] the nightingales out of the trees". (TV: "The Executioners")
After Mike Yates said he had seen a fox in Piccadilly, Sarah Jane Smith jokingly asked if he had seen nightingales in Berkeley Square. (TV: Invasion of the Dinosaurs)