31. The biplane was based on the Curtiss Carrier Pigeon , a purpose-built aircraft for airmail operations. 32. She said investigations revealed that most of the diamonds were smuggled out using carrier pigeons . 33. Fast communication meant a telegram, even a carrier pigeon . 34. However, Ciccio prepares squab for the occasion, killing all but one of the carrier pigeons . 35. To communicate with their city offices while on fishing trips, the men used carrier pigeons . 36. They were also used to deliver carrier pigeons . 37. Off the island of Pantelleria the Sicilian fleet encountered a Mahdia ship bearing some carrier pigeons . 38. Instead of carrier pigeons , the Swiss Defense Ministry proposed relying more on radio and electronic communication. 39. Unusually, the " Gladiator " stocked carrier pigeons to carry distress messages to the company office. 40. And for the record, we just switched our long-distance service to carrier pigeons . . ..