Headlines -
112.3 million birds of 522 species
(inc escapees and races)
Based on 116337
TTVs, 2072035 Roving Records,
and 2268425 BirdTrack records from 12982 online users
Most widespread species on TTVs
This is based on the number of TTVs on which the species was counted.
Season
1st
2nd
3rd
Winter
4th: Blue Tit , 5th: Wren
Breeding
4th: Woodpigeon , 5th: Robin
Roving Records - thousands of records
The table below summarises the incredible number of Roving Records
submitted by observers in each season, and the graph shows the number of Roving Records per survey month since fieldwork began in November 2007.
Season
Number of records
Number of species
Number of 10-km squares
Winter
1111792
405
3725
Breeding
960243
430
3779
Timed Tetrad Visits - amazing uptake
The table below summarises how many tetrads have been requested by observers in each season.
Season
Number of tetrads signed-up
Progress towards minimum requirement
Click below for map...
Winter
43851
Breeding
42428
Timed Tetrad Visits - excellent coverage
The table below summarises how many tetrads have been surveyed by observers in each season.
Season
Number of tetrads visited
Surveyed twice
Progress towards minimum coverage
Click below for map...
Winter (all years)
37694
28357
2007/08
16497
14904
2008/09
11974
9856
2009/10
9223
3597
Breeding (all years)
27164
23122
2008
15190
13361
2009
11974
9761
2010
0
0
Combined results - Atlas and BirdTrack
The results below bring together Roving Records, Timed Tetrad Visits and
information from BirdTrack.
What % of the species have we found in each 10-km square?
Select a region to see more detailed results
(Versions for slow connections here)
To view example species maps and results, click on the images below:
Wren
Meadow Pipit
Sedge Warbler
Willow Warbler
Little Owl
Barn Owl
Red Grouse
Skylark
House Sparrow
Tawny Owl
Blackbird
Oystercatcher
Maps are provisional, unvalidated
and do not include paper records. They are indicative of coverage only.
Validation - turning records to data
The table below summarises the number of records received by season
and shows progress on validation. Validation is crucial to ensure the records we use are correct and free from typos or errors.
Season
Unchecked
Valid
ID query
Breeding code query
Count query
Location query
% valid
% queried
Winter (all years)
1652321
3079985
936
201
649
1457
65.04
0.068
Breeding (all years)
1564004
2624762
758
2311
261
1594
62.588
0.117
To go directly to Atlas homepage, click
here Any problems with this page e-mail:
web.support@bto.org
