| 11. | There was no warning call prior to the explosion.
|
| 12. | When it sees an approaching falcon it gives a warning call and the other sandgrouse freeze.
|
| 13. | A warning call on behalf of the Basque separatist group ETA alerted police before the blast.
|
| 14. | Warning calls, although exposing a bird and putting it in danger, are frequently given by birds.
|
| 15. | Belloch said that ETA hasn't given a warning call for one of its attacks in many years.
|
| 16. | Police searched the City Council building for an explosive device after a warning call, news agencies said.
|
| 17. | The blasts came more than half an hour after one warning call to The Associated Press office.
|
| 18. | A warning call on behalf of the separatist group gave police enough time to clear the area.
|
| 19. | Chickens also give a low " warning call " when they think they see a predator approaching.
|
| 20. | A warning call on behalf of the Basque separatist group ETA alerted police before the first blast.
|
