| 13/10/22 | Willow Warbler | Harwell Laboratory: Rutherford Laboratory | 1 | M Merritt |
| m. Subsong heard. |
| 10/09/22 | Willow Warbler | Standlake Pit 60 | 1 | M Cunningham |
08:41
| Visit 7 30 ... 8 30. |
| 10/09/22 | Willow Warbler | Standlake Pit 60 | 1 | M Cunningham |
08:41
| |
| 09/09/22 | Willow Warbler | White Horse Hill | 1 | M Cunningham |
18:14
| With sev chiffchaff and 3 Blackcap. |
| 09/09/22 | Willow Warbler | Standlake Pit 60 | 1 | M Cunningham |
11:04
| With 7 chiff. |
| 08/09/22 | Willow Warbler | Otmoor | 2 | S Roby |
21:22
| In mixed flock. |
| 08/09/22 | Willow Warbler | Farmoor Reservoir | 5 | I West |
16:30
| |
| 05/09/22 | Willow Warbler | Standlake Pit 60 | 1 | M Cunningham |
14:54
| |
| 04/09/22 | Willow Warbler | Standlake Pit 60 | 1 | M Cunningham |
14:24
| |
| 01/09/22 | Willow Warbler | Standlake Pit 60 | 2 | M Cunningham |
19:43
| |
| 31/08/22 | Willow Warbler | Moreton nr Thame: Moreton Golf Course | 5 | N Marriner |
18:00
| |
| 27/08/22 | Willow Warbler | Letcombe Bassett: Gramps Hill | 1 | M Merritt |
| |
| 26/08/22 | Willow Warbler | Standlake Pit 60 | 2 | M Cunningham |
15:46
| Small feeding group also included blackcaps chiffs tits. |
| 24/08/22 | Willow Warbler | Moreton nr Thame: Moreton Golf Course | 2 | N Marriner |
07:30
| |
| 23/08/22 | Willow Warbler | Letcombe Regis | 1 | M Merritt |
| |
| 22/08/22 | Willow Warbler | Lockinge | 1 | M Merritt |
| |
| 20/08/22 | Willow Warbler | Aston Upthorpe | 1 | J Taylor |
18:39
| m. In song. |
| 19/08/22 | Willow Warbler | Port Meadow | 2 | A Hartley |
| Singing in the hedge by the allotments. |
| 12/08/22 | Willow Warbler | Cholsey | 1 | J Taylor |
16:44
| |
| 08/08/22 | Willow Warbler | Cholsey | 1 | M Fraser-Jones |
07:49
| SU588862. |
| 07/08/22 | Willow Warbler | Waterstock: River Thame | 1 | N Marriner |
08:00
| |
| 05/08/22 | Willow Warbler | Sunnymede | 1 | N Boyd |
08:15
| ad. Calling regularly, occasional subdued song. SP512099. |
| 03/08/22 | Willow Warbler | Aston Upthorpe | 6 | J Taylor |
18:43
| Family unit. |
| 15/06/22 | Willow Warbler | East Hendred | 1 | J Cleeter |
20:15
| Around the edge of cricket ground. |
| 15/06/22 | Willow Warbler | Bletchingdon | 1 | D Watkinson |
07:20
| A male has been singing here for 2 months now. SP508175. |
| 09/06/22 | Willow Warbler | Burnt Platt Wood | 1 | J Taylor |
10:42
| Still present but constantly on move within 100m radius due to Blackcap and Garden Warbler males clearly with young. Possibly without a partner, which would be a pity as has been present two years previous. SU6883. |
| 08/06/22 | Willow Warbler | Letcombe Bassett: Gramps Hill | 1 | M Merritt |
| m. |
| 08/06/22 | Willow Warbler | Stoke Row | 1 | J Taylor |
17:00
| m. Seen two or three times deep in Burnt Platt close to village boundary. |
| 04/06/22 | Willow Warbler | Farmoor Reservoir: Pinkhill | 1 | R Parsons |
03:30
| |
| 28/05/22 | Willow Warbler | Grimsbury Reservoir | 2 | G Blockley |
| 2 males singing still (including a mixed singer that has been around since at least 11/04), possibly nesting? |
| 27/05/22 | Willow Warbler | Warburg Reserve | 1 | J Kearns |
14:30
| |
| 19/05/22 | Willow Warbler | Harwell Laboratory: Rutherford Laboratory | 1 | M Merritt |
 | m. Heard only. Apparent mixed singer. Song bought to mind Iberian Chiffchaff but missing diagnostic notes. Baed on empirical probability Willow Warbler is more likely than Chiffchaff. |
| 19/05/22 | Willow Warbler | Burnt Platt wood | 1 | J Taylor |
18:01
| m. SU6883. |
| 13/05/22 | Willow Warbler | Chipping Norton | 1 | S B Akers |
06:45
| SP283268. |
| 06/05/22 | Willow Warbler | Farmoor Reservoir: Pinkhill | 2 | M Violette |
17:15
| |
| 05/05/22 | Willow Warbler | Kirtlington: Golf Course | 1 | D Watkinson |
17:30
| Singing - been here for over a week. SP488190. |
| 02/05/22 | Willow Warbler | The Maker Space, Gangsdown Hill, Nuffield | 1 | M Amphlett |
09:30
| Single male calling for a short while, nothing for the rest of the day. FOY for me. SU675876. |
| 03/05/22 | Willow Warbler | Chipping Norton | 1 | S B Akers |
07:30
| H/O. SP283268. |
| 26/04/22 | Willow Warbler | Segsbury Camp | 1 | M Merritt |
| SU383845. |
| 26/04/22 | Willow Warbler | Kirtlington: Golf Course | 1 | D Watkinson |
21:30
| male. Singing on edge of golf course. SP489189. |
| 26/04/22 | Willow Warbler | Bletchingdon | 1 | D Watkinson |
21:30
| male. Singing in in this location for over a week now. SP510173. |
| 21/04/22 | Willow Warbler | Harwell Laboratory | 1 | M Merritt |
| |
| 21/04/22 | Willow Warbler | Sonning Eye GPs | 1 | R C Watts |
14:15
| Seen and singing on walk. |
| 20/04/22 | Willow Warbler | Chipping Norton | 1 | S B Akers |
07:30
| SP283268. |
| 18/04/22 | Willow Warbler | Letcombe Regis | 1 | M Merritt |
| |
| 18/04/22 | Willow Warbler | South Hinksey | 2 | P Knevett |
08:53
| |
| 16/04/22 | Willow Warbler | Aston Upthorpe | 1 | A Cheke |
22:13
| singing male. |
| 16/04/22 | Willow Warbler | Chipping Norton | 2 | S B Akers |
09:25
| SP283268. |
| 16/04/22 | Willow Warbler | Chipping Norton | 2 | S B Akers |
09:25
| SP283268. |
| 15/04/22 | Willow Warbler | Radley GP | 3 | I Elkins |
08:44
| At least three in song. |
| 14/04/22 | Willow Warbler | Otmoor: RSPB reserve | 5 | S B Akers |
07:30
| |
| 14/04/22 | Willow Warbler | Baulking Pit | 5 | M Merritt |
| singing males. SU322908. |
| 14/04/22 | Willow Warbler | Oxford: Aston's Eyot | 1 | B Pomfret |
08:00
| singing. |
| 14/04/22 | Willow Warbler | Iffley: Iffley Meadows | 1 | B Pomfret |
07:00
| singing. |
| 14/04/22 | Willow Warbler | Woolstone Down | 1 | M Merritt |
| |
| 13/04/22 | Willow Warbler | Standlake Pit 60 | 1 | M Cunningham |
21:39
| My FOY here. In half-hearted song. |
| 13/04/22 | Willow Warbler | Farmoor Reservoir: Pinkhill | 3 | Y Morris |
14:02
| Singing. |
| 13/04/22 | Willow Warbler | Chipping Norton | 2 | S B Akers |
10:30
| SP283268. |
| 13/04/22 | Willow Warbler | Blowingstone Hill | 2 | M Merritt |
| SU317865. |
| 12/04/22 | Willow Warbler | Otmoor: RSPB reserve | 5 | S Roby |
06:00
| |
| 12/04/22 | Willow Warbler | Fyfield Wick | 1 | J Cleeter |
19:05
| male. Singing adjacent to garden as were other Warblers. |
| 12/04/22 | Willow Warbler | River Thames: Iffley to Abingdon | 3 | M Merritt |
| |
| 12/04/22 | Willow Warbler | Chipping Norton | 1 | S B Akers |
10:00
| SP283268. |
| 11/04/22 | Willow Warbler | Otmoor | 4 | S Roby |
22:03
| |
| 11/04/22 | Willow Warbler | Farmoor Reservoir | 1 | P Law |
13:00
| |
| 09/04/22 | Willow Warbler | Port Meadow | 1 | A Hartley |
| Several heard singing. |
| 08/04/22 | Willow Warbler | Cassington: A40 | 2 | A Stevens |
11:45
| male. Two singing birds. SP442097. |
| 08/04/22 | Willow Warbler | Port Meadow | 1 | A Hartley |
| |
| 08/04/22 | Willow Warbler | Didcot: Freeman Road | 4 | M Violette |
10:06
| At least four singing individuals in a corridor of trees at the end of the garden. SU512905. |
| 07/04/22 | Willow Warbler | Didcot: Freeman Road | 1 | M Violette |
11:42
| Have heard one singing for the last 4 days, saw it today for the first time. SU512905. |
| 05/04/22 | Willow Warbler | Moreton nr Thame: Moreton Golf Course | 1 | L Marriner |
19:22
| Singing along track, FOY. |
| 05/04/22 | Willow Warbler | Chipping Norton | 1 | S B Akers |
10:00
| In song - another first here for this year. SP283268. |
| 05/04/22 | Willow Warbler | New Marston: New Marston Meadows | 1 | T Evans |
| FOY. |
| 04/04/22 | Willow Warbler | Fyfield Wick | 1 | J Cleeter |
08:00
| male. FOY singing in Laurel adjacent to my garden. |
| 03/04/22 | Willow Warbler | Farmoor Reservoir: Pinkhill | 1 | C O Caomhanaigh |
08:40
| |
| 02/04/22 | Willow Warbler | Grimsbury Reservoir | 1 | G Blockley |
| m. |
| 22/03/22 | Willow Warbler | Farmoor Reservoir | 1 | P Law |
09:30
| h/o from within water treatment works. |