Which birds never land?

Related questions

1. Do birds sleep on the wing?
2. Is there a bird that never lands?
3. Do chimney swifts fly at night?
4. What's the difference between a swallow and swift?
5. What's the difference between a swallow and a swift?
6. What is the loudest bird?
7. Do Swifts have legs?
8. Which is the smallest bird in India?
9. Can birds sleep while flying?
10. What animal is the loudest?

Tags

1. #superficially
2. #spends
3. #appears
4. #common
5. #swift
6. #essentially
7. #ground
8. #somewhat
9. #medium
10. #almost
11. #learns
12. #martins
13. #touching
14. #similar
15. #house
16. #remarkable
17. #however
18. #other
19. #never
20. #birds
21. #entire
22. #sized
23. #swallows