Deneyinde güvercinleri kullandı.
- He used pigeons in his experiment.
Güvercin ve deve kuşu her ikisi de kuştur; biri uçabilir ve diğeri uçamaz.
- The pigeon and the ostrich are both birds; one can fly and the other cannot.
Professor Stephen Hawking put the cat among the pigeons last week with his cheery remarks about comet Machholz-2, which some astronomers believe could be heading our way. — The Times, 19 September 1994.