Research and analysis
Avian influenza in wild birds: 2020
Updated 22 April 2024
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| Week number | Location (county) | Number of findings | Species involved | Total number of birds testing positive |
|---|---|---|---|---|
| Week 1 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 2 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 3 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 4 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 5 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 6 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 7 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 8 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 9 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 10 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 11 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 12 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 13 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 14 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 15 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 16 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 17 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 18 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 19 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 20 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 21 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 22 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 23 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 24 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 25 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 26 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 27 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 28 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 29 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 30 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 31 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 32 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 33 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 34 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 35 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 36 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 37 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 38 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 39 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 40 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 41 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 42 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 43 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 44 (2020) | Not set | 0 | No positive birds reported | 0 |
| Week 45 (2020) | Gloucestershire | 1 | Greylag Goose; Canada Goose | 2 |
| Week 46 (2020) | Gloucestershire | 1 | greylag Goose | 1 |
| Week 46 (2020) | Devon | 1 | Black Swan | 5 |
| Week 46 (2020) | Lincolnshire | 1 | Shelduck,wigeon, Brent goose, Canda goose, Greylag goose | 8 |
| Week 46 (2020) | Lancashire | 1 | Buzzard | 1 |
| Week 46 (2020) | Lancashire | 1 | Pink footed goose | 1 |
| Week 46 (2020) | Gloucestershire | 1 | Canada goose | 6 |
| Week 46 (2020) | Dorset | 1 | Canada goose | 1 |
| Week 47 (2020) | Essex | 1 | Mute swan | 1 |
| Week 47 (2020) | Cambridgeshire | 1 | Lesser black backed gull (juvenile) | 1 |
| Week 47 (2020) | Dorset | 1 | mute swans, Canada goose | 6 |
| Week 47 (2020) | Dorset | 1 | mute swan | 1 |
| Week 47 (2020) | Devon | 1 | Black swans | 2 |
| Week 47 (2020) | Dorset | 1 | mute swans | 3 |
| Week 47 (2020) | Gloucestershire | 2 | greylag goose, Canada goose | 2 |
| Week 48 (2020) | Cambridgeshire | 1 | mute swan | 1 |
| Week 48 (2020) | Cambridgeshire | 1 | mute swan | 1 |
| Week 48 (2020) | Dorset | 1 | mute swans, herring gulls, unspecified bird | 26 |
| Week 48 (2020) | Devon | 1 | black swan | 1 |
| Week 48 (2020) | Cornwall | 1 | Buzzard | 1 |
| Week 48 (2020) | Devon | 1 | Sparrowhawk | 1 |
| Week 48 (2020) | Devon | 1 | mute swan | 1 |
| Week 48 (2020) | Dorset | 1 | mute swan | 1 |
| Week 48 (2020) | Gloucestershire | 1 | black swan | 1 |
| Week 48 (2020) | Warwarckshire | 1 | kestrel | 1 |
| Week 48 (2020) | Suffolk | 1 | mute swan | 1 |
| Week 48 (2020) | Kent | 1 | Peregrine Falcon | 1 |
| Week 48 (2020) | Staffordshire | 1 | mute swan | 1 |
| Week 48 (2020) | Dorset | 1 | mute swan | 1 |
| Week 48 (2020) | Dorset | 2 | mute swans, Canada goose | 32 |
| Week 48 (2020) | Gloucestershire | 1 | mute swans | 3 |
| Week 48 (2020) | Gloucestershire | 1 | Canada goose | 1 |
| Week 48 (2020) | Oxfordshire | 1 | Canada goose | 1 |
| Week 48 (2020) | Surrey | 1 | Greylag goose | 1 |
| Week 48 (2020) | Essex | 1 | mute swan | 1 |
| Week 48 (2020) | Cambridgeshire | 1 | mute swan | 1 |
| Week 48 (2020) | Northumberland | 1 | Brent goose | 1 |
| Week 48 (2020) | Dorset | 1 | Mute swans | 4 |
| Week 48 (2020) | Devon | 1 | Black swan | 1 |
| Week 48 (2020) | Warwickshire | 1 | Buzzard | 1 |
| Week 48 (2020) | Northumberland | 1 | Brent goose | 2 |
| Week 48 (2020) | Cumbria | 1 | Mute swans | 6 |
| Week 48 (2020) | Lancashire | 1 | Mutes swans | 4 |
| Week 49 (2020) | Gwent | 1 | Mute swans | 3 |
| Week 49 (2020) | Oxfordshire | 1 | Lesser black backed gull | 1 |
| Week 49 (2020) | Northumberland | 1 | uspecified goose | 1 |
| Week 49 (2020) | Lincolnshire | 1 | Mute swan | 1 |
| Week 49 (2020) | Yorkshire | 1 | Great white egret | 1 |
| Week 49 (2020) | Norfolk | 1 | Whooper swan | 1 |
| Week 49 (2020) | Carmarthenshire | 1 | Little grebe | 1 |
| Week 49 (2020) | Warwickshire | 1 | Grey heron | 1 |
| Week 50 (2020) | Worcestershire | 1 | mute swans | 5 |
| Week 50 (2020) | Aberdeen | 1 | Whooper swans | 3 |
| Week 50 (2020) | Fife | 1 | Unspecified swan | 1 |
| Week 50 (2020) | Dorset | 1 | mute swans | 12 |
| Week 50 (2020) | Dorset | 1 | Canada goose | 1 |
| Week 50 (2020) | Essex | 1 | Mute swan | 1 |
| Week 50 (2020) | Cambridgeshire | 1 | Whooper swans | 3 |
| Week 50 (2020) | Cambridgeshire | 1 | Mute swan | 1 |
| Week 50 (2020) | Cambridgeshire | 1 | Whooper swan | 1 |
| Week 50 (2020) | Lancashire | 1 | Mute swan, Greylag goose | 3 |
| Week 50 (2020) | Warwickshire | 1 | Mute swans | 2 |
| Week 50 (2020) | Lancashire | 1 | Greylag goose | 2 |
| Week 50 (2020) | Essex | 1 | Mute swan | 1 |
| Week 50 (2020) | Worcestershire | 1 | Mute swans | 6 |
| Week 50 (2020) | Norfolk | 1 | Whooper swans, Greylag goose | 6 |
| Week 50 (2020) | Norfolk | 1 | Mute swans | 5 |
| Week 50 (2020) | Essex | 1 | Mute swan | 1 |
| Week 50 (2020) | Monmouthshire | 1 | Mute swans | 2 |
| Week 50 (2020) | Hampshire | 1 | Mute swans | 3 |
| Week 50 (2020) | Leicestershire | 1 | Mute swan | 1 |
| Week 50 (2020) | Bedfordshire | 1 | Mute swan | 1 |
| Week 51 (2020) | Dorset | 1 | Mute and unspecified swans | 5 |
| Week 51 (2020) | Dorset | 1 | Mute swan | 1 |
| Week 51 (2020) | Dorset | 1 | Canada goose | 1 |
| Week 51 (2020) | Gloucestershire | 1 | Unspecified swan | 1 |
| Week 51 (2020) | Greater Manchester | 1 | Canada goose | 1 |
| Week 51 (2020) | Cambridgeshire | 1 | Whooper swan, mute swan | 2 |
| Week 51 (2020) | Cambridgeshire | 1 | Mute swan | 1 |
| Week 51 (2020) | Cambridgeshire | 1 | Mute swan | 1 |
| Week 51 (2020) | Cambridgeshire | 1 | Mute swan | 1 |
| Week 51 (2020) | Norfolk | 1 | Whooper swan | 1 |
| Week 51 (2020) | Devon | 1 | Canada goose | 1 |
| Week 51 (2020) | Isle of Wight | 1 | Mute swan | 1 |
| Week 51 (2020) | Lincolnshire | 1 | Whooper swan | 1 |
| Week 51 (2020) | County Durham | 1 | Unsecified swans | 3 |
| Week 51 (2020) | County Durham | 1 | Unsecified swans | 2 |
| Week 51 (2020) | Norfolk | 1 | Whooper swan | 1 |
| Week 51 (2020) | Highlands | 1 | Greylag goose | 1 |
| Week 51 (2020) | Tyne and Wear | 1 | Unspecified swan | 1 |
| Week 51 (2020) | Northumberland | 1 | Canada goose | 1 |
| Week 51 (2020) | Gloucestershire | 1 | Mute swan | 1 |
| Week 51 (2020) | Worcestershire | 1 | Mute swan | 1 |
| Week 52 (2020) | Norfolk | 1 | Whooper swans | 2 |
| Week 52 (2020) | Cambridgeshire | 1 | Mute swan | 1 |
| Week 52 (2020) | Cambridgeshire | 1 | Mute swan | 1 |
| Week 52 (2020) | Cambridgeshire | 1 | Mute swan | 1 |
| Week 52 (2020) | Cambridgeshire | 1 | Mute swan | 1 |
| Week 52 (2020) | Norfolk | 1 | Whooper swan | 1 |
| Week 52 (2020) | Cambridgeshire | 1 | Whooper swans | 2 |
| Week 52 (2020) | Tyne and Wear | 1 | Canada goose | 1 |
| Week 52 (2020) | County Durham | 1 | Mute swan | 1 |
| Week 52 (2020) | Fife | 1 | Unsecified swans | 3 |
| Week 52 (2020) | Warwickshire | 1 | Mute swan | 1 |
| Week 52 (2020) | Lancashire | 1 | Whooper swan | 1 |
| Week 52 (2020) | Gloucestershire | 1 | Canada goose | 1 |
| Week 52 (2020) | Gloucestershire | 1 | Mute swan | 1 |
| Week 52 (2020) | Gloucestershire | 1 | Mute swan | 1 |
| Week 52 (2020) | Cumbria | 1 | Mute swans | 2 |
| Week 52 (2020) | Cambridgeshire | 1 | Buzzard | 1 |
| Week 52 (2020) | Dorset | 1 | Mute swans | 3 |
| Week 52 (2020) | Lancashire | 1 | Greylag goose | 1 |
| Week 52 (2020) | Clackmannanshire | 1 | Mute swan | 1 |
| Week 52 (2020) | Clackmannanshire | 1 | Mute swan | 2 |
| Week 52 (2020) | Lancashire | 1 | Mute swans | 2 |
| Week 52 (2020) | Shropshire | 1 | Mute swan | 1 |
| Week 52 (2020) | Angus | 1 | Whooper swan | 1 |
| Week 52 (2020) | Bedfordshire | 1 | Mute swan | 1 |
| Week 53 (2020) | Warwarkshire | 1 | Canada goose | 1 |
| Week 53 (2020) | Clackmannanshire | 1 | Mute swan | 1 |
| Week 53 (2020) | Cornwall | 1 | Mute swan | 1 |
| Week 53 (2020) | Tyne and Wear | 1 | Mute swan | 1 |