| 11. | Nightjars are medium-sized ground-nesting nocturnal birds with long wings, short legs and very short bills.
|
| 12. | Their short bills are an adaptation to aerial feeding.
|
| 13. | These birds are fairly small and slim, with short bills, round heads and long wings.
|
| 14. | They have a short bill and fairly long legs.
|
| 15. | Their short bills are an adaptation to aerial feeding
|
| 16. | They are brownish birds with short bills and erectile crests, found on fairly-dry open grasslands.
|
| 17. | It has a large head and a short bill.
|
| 18. | Within its range, the western jackdaw is unmistakable; its short bill and grey nape are distinguishing features.
|
| 19. | Rates on short bills were slightly higher.
|
| 20. | Overall, the Columbidae tend to have short bills and legs, and small heads on large, compact bodies.
|
