Tables of alerts and population increases from CBC/BBS 
Tables of alerts and population increases from WBS/WBBS 
Tables of alerts and population increases from CES 
Tables of population declines and increases from BBS 
Tables of breeding performance

Tables of alerts and population increases from CBC/BBS 

NOTE: The tables listed in this section only include those species for which combined CBC/BBS results are produced. For the 10 year and 5 year tables which are based on BBS data only, a more comprehensive list which includes additional species can be viewed under Tables of population declines and increases from BBS.

1a. CBC/BBS UK alerts – long term
1b. CBC/BBS England alerts – long term
2a. CBC/BBS UK alerts – 25 years 
2b. CBC/BBS England alerts – 25 years 
3a. CBC/BBS UK alerts – 10 years 
3b. CBC/BBS England alerts – 10 years 
4a. CBC/BBS UK alerts – 5 years 
4b. CBC/BBS England alerts – 5 years 
5a. CBC/BBS UK population increases of >50% – long term
5b. CBC/BBS England population increases of >50% – long term

Tables of alerts and population increases from WBS/WBBS 
1. WBS/WBBS alerts – long term
2. WBS/WBBS alerts – 25 years 
3. WBS/WBBS alerts – 10 years 
4. WBS/WBBS alerts – 5 years 
5. WBS/WBBS population increases of >50% – long term

Tables of alerts and population increases from CES 
1. CES adults alerts – long term
2. CES adults alerts – 25 years
3. CES adults alerts – 10 years 
4. CES adults alerts – 5 years 
5. CES adults population increases of >50% – long term

Tables of population declines and increases from BBS 
1. BBS – UK alerts – long term
2. BBS – England alerts – long term
3. BBS – Scotland alerts – long term
4. BBS – Wales alerts – long term
5. BBS – Northern Ireland alerts – long term
6. BBS – UK alerts – 10 years 
7. BBS – England alerts – 10 years 
8. BBS – Scotland alerts – 10 years 
9. BBS – Wales alerts – 10 years 
10. BBS – Northern Ireland alerts – 10 years 
11. BBS – UK alert – 5 years 
12. BBS – England alerts – 5 years 
13. BBS – Scotland alerts – 5 years 
14. BBS – Wales alerts – 5 years 
15. BBS – Northern Ireland alerts – 5 years 
16. BBS – UK population increases of >50% 
17. BBS – England population increases of >50% 
18. BBS – Scotland population increases of >50% 
19. BBS – Wales population increases of >50% 
20. BBS – Northern Ireland population increases of >50% 

Tables of breeding performance 
1. Clutch size 
2. Brood size
3. Egg-stage nest failure rate
4. Chick-stage nest failure rate