Headlines -
135.9 million birds of 542 species
(inc escapees and races)
Based on 144629
TTVs, 2624176 Roving Records,
and 2968378 BirdTrack records from 14431 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
1244208
414
3748
Breeding
1379968
449
3822
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
45325
Breeding
45470
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)
40225
33524
2007/08
16509
14935
2008/09
12097
9947
2009/10
11619
8642
Breeding (all years)
38764
32116
2008
15224
13398
2009
12315
10075
2010
11225
8643
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)
1315761
3942470
1086
202
525
1814
74.925
0.069
Breeding (all years)
2040664
3946691
1120
1640
337
2458
65.856
0.093
To go directly to Atlas homepage, click
here Any problems with this page e-mail:
web.support@bto.org
