Research and analysis
Avian influenza in wild birds: winter 2016 to 2017
Updated 6 June 2025
| Week number | Location (county) | Number of findings | Species involved | Total number of birds testing positive |
|---|---|---|---|---|
| Week 51 (2016) | Carmarthenshire | 1 | Wigeon | 1 |
| Week 51 (2016) | Dumfries and Galloway | 1 | Peregrine falcon | 1 |
| Week 51 (2016) | Leicestershire | 1 | Wigeon | 1 |
| Week 51 (2016) | Somerset | 1 | Wigeon | 1 |
| Week 52 (2016) | Lincolnshire | 1 | Wigeon | 5 |
| Week 52 (2016) | Gloucestershire | 1 | Greylag goose, White fronted goose, Eurasian wigeon, Canada goose | 4 |
| Week 52 (2016) | Merseyside | 1 | Pochard (2), mallard, black headed gull, cormorant | 5 |
| Week 1 (2017) | Dorset | 1 | Mute swans | 9 |
| Week 1 (2017) | Devon | 1 | Wigeon | 1 |
| Week 1 (2017) | Conwy | 1 | Teal | 1 |
| Week 2 (2017) | Wales | 1 | Buzzard | 1 |
| Week 2 (2017) | Dorset | 1 | Mute swans | 1 |
| Week 2 (2017) | Lancashire | 1 | Tufted duck | 1 |
| Week 2 (2017) | Tyne & Wear | 1 | Blackheaded gull | 1 |
| week 2 (2017) | Northants | 1 | Buzzard | 1 |
| Week 2 (2017) | Gloucestershire | 1 | Greylag goose | 1 |
| Week 3 (2017) | Dorset | 1 | Canada goose | 1 |
| Week 3 (2017) | Somerset | 1 | Buzzard | 1 |
| Week 4 (2017) | North Yorkshire | 1 | Buzzard | 1 |
| Week 5 (2017) | Lancashire | 1 | Greylag goose | 1 |
| Week 6 (2017) | Norfolk | 1 | Whooper swan | 1 |
| Week 7 (2017) | Norfolk | 1 | Whooper swan | 1 |
| Week 8 (2017) | Norfolk | 1 | Kestrel | 1 |
| Week 9 (2017) | Pembroke | 1 | Wigeon | 1 |
| Week 10 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 11 (2017) | Somerset | 1 | Mute swan | 1 |
| Week 12 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 13 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 14 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 15 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 16 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 17 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 18 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 19 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 20 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 21 (2017) | Not set | 0 | no positive birds reported | 0 |
| Week 22 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 23 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 24 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 25 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 26 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 27 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 28 (2017) | Norfolk | 1 | Mute swan | 1 |
| Week 29 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 30 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 31 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 32 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 33 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 34 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 35 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 36 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 37 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 38 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 39 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 40 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 41 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 42 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 43 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 44 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 45 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 46 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 47 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 48 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 49 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 50 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 51 (2017) | Not set | 0 | No positive birds reported | 0 |
| Week 52 (2017) | Not set | 0 | No positive birds reported | 0 |