| 26/12/10 | Great Crested Grebe | Wraysbury GPs | 7 | J M Clark |
14:00
| |
| 20/12/10 | Great Crested Grebe | White Swan Lake, Dinton Pastures CP | 9 | F J Cottington |
12:00
| Hardly any unfrozen water now. |
| 27/11/10 | Great Crested Grebe | Thatcham Marsh | 10 | S A Graham |
14:00
| Seven on main TNDC lake, 2 on W. and 1 L. lake. |
| 14/11/10 | Great Crested Grebe | Whiteknights Lake, Reading | 2 | P Doctor |
14:30
| |
| 28/10/10 | Great Crested Grebe | Moor Green Lakes | 15 | J M Clark |
| |
| 21/10/10 | Great Crested Grebe | Lavell's Lake, Dinton Pastures CP | 2 | P Bright-Thomas |
09:30
| While looking for motion in the island reedbed to indicate the Bittern was waking up, I noticed that two GC Grebes were actually diving and swimming among the reeds, causing the upper reeds to shake. |
| 10/10/10 | Great Crested Grebe | South Lake, Woodley | 5 | P Gipson |
| Pr + 3 juvs. |
| 22/09/10 | Great Crested Grebe | Main Pit, Theale GPs | 91 | R J Burness |
09:30
| |
| 16/09/10 | Great Crested Grebe | Thatcham Marsh | 7 | S A Graham |
14:30
| TNDC - Incubating adult still in NE. corner of the central Island. |
| 13/09/10 | Great Crested Grebe | Main Pit, Theale GPs | 68 | R J Burness |
09:40
| |
| 13/09/10 | Great Crested Grebe | Colebrook Lake, Moor Green Lakes | 11 | L Thorn |
11:08
| CLN. |
| 12/09/10 | Great Crested Grebe | Lower Farm GP | 3 | S A Graham |
16:00
| 3 juv. Broods of 2 and 1 still present. |
| 07/09/10 | Great Crested Grebe | Lea Farm Lake | 4 | D P Nash |
17:00
| adult with 3 juveniles - striped and only about half sized - probable bred on site. |
| 27/08/10 | Great Crested Grebe | Queen Mother Reservoir | 1 | R Righelato |
11:00
| 50. Key holders only. |
| 27/08/10 | Great Crested Grebe | Lower Farm GP | 8 | N Cleere |
08:00
| incl pair with small chick. |
| 26/08/10 | Great Crested Grebe | Lea Farm Lake | 5 | R Marsh |
11:05
| Adults + 3 juvs from island. 2 are more adventurous, swimming + diving. 3rd smaller and mostly seems to stay on adult's back. |
| 21/08/10 | Great Crested Grebe | Lower Farm GP | 7 | S A Graham |
16:15
| |
| 19/08/10 | Great Crested Grebe | Lea Farm Lake | 6 | R Marsh |
12:20
| Pair from island swimming around lake with tiny chicks on board - we only saw 2 but GSE had seen 3 earlier, according to hide log. |
| 15/08/10 | Great Crested Grebe | South Lake, Woodley | 3 | P Gipson |
15:50
| Pr + 1 chk. |
| 15/08/10 | Great Crested Grebe | Woolhampton GPs | 4 | S A Graham |
16:30
| 4 juv. Unfledged young. |
| 08/08/10 | Great Crested Grebe | South Lake, Woodley | 3 | P Gipson |
| Pr + 1+ chick on back. |
| 06/08/10 | Great Crested Grebe | Thatcham Marsh | 1 | S A Graham |
15:45
| TNDC - Incubating adult at the NE. corner of the central Island. |
| 27/07/10 | Great Crested Grebe | Moatlands Main Lake, Theale GPs | 33 | R Crawford |
07:15
| |
| 21/07/10 | Great Crested Grebe | Lower Farm GP | 2 | S A Graham |
15:45
| Pair attending to a nest amongst emerging Willows to the right of the spit. |
| 17/07/10 | Great Crested Grebe | Thatcham Marsh | 9 | S A Graham |
15:00
| 9 juv. TNDC - broods of 4, 3, 1 and 1 over 3 lakes. |
| 17/07/10 | Great Crested Grebe | Green Park | 2 | P Gipson |
| ad + young. |
| 16/07/10 | Great Crested Grebe | Colebrook Lake, Moor Green Lakes | | B M Archer |
07:00
| pair performing a "weed dance". |
| 13/07/10 | Great Crested Grebe | Colebrook Lake, Moor Green Lakes | 4 | M Sklar |
11:30
| CLN. |
| 12/07/10 | Great Crested Grebe | Lavell's Lake, Dinton Pastures CP | 4 | R Marsh |
16:20
| Pr adults + 2 rapidly growing chicks. |
| 28/06/10 | Great Crested Grebe | Sandford Lake, Dinton Pastures CP | 3 | R Marsh |
11:30
| Adults + 1 juv. |
| 19/06/10 | Great Crested Grebe | Thatcham Marsh | 4 | S A Graham |
15:00
| 2 ad +2 juv. TNDC main lake. |
| 19/06/10 | Great Crested Grebe | Lea Farm Lake | 2 | R Marsh |
10:15
| Pair displaying. |
| 13/06/10 | Great Crested Grebe | Mapledurham Lock | 6 | C Burch |
12:00
| 2 Adults and 4 chicks. Adult a very successful fisherman. |
| 12/06/10 | Great Crested Grebe | Dorney Wetlands, Jubilee River | 5 | A E Little |
15:20
| |
| 12/06/10 | Great Crested Grebe | Woolhampton GPs | 10 | S A Graham |
15:00
| Min. count including pair displaying and one incubating bird. |
| 30/05/10 | Great Crested Grebe | Lea Farm Lake | 3 | R Marsh |
09:30
| pair + juv. |
| 27/05/10 | Great Crested Grebe | Lavell's Lake, Dinton Pastures CP | 2 | R Marsh |
10:50
| Adults + 1 juv from Bittern hide. |
| 22/05/10 | Great Crested Grebe | Lea Farm Lake | 3 | F J Cottington |
05:00
| 1 tiny young. |
| 15/05/10 | Great Crested Grebe | Caversham, R. Thames | 4 | J C Langridge |
12:00
| 1 ad, 3 chicks. Chicks being fed by Caversham Bridge. |
| 24/04/10 | Great Crested Grebe | Woolhampton GPs | 20 | S A Graham |
14:00
| |
| 10/04/10 | Great Crested Grebe | Thatcham Marsh | 2 | S A Graham |
15:32
| Pair attending to a nest on Long lake. |
| 28/03/10 | Great Crested Grebe | Whiteknights Lake, Reading | 2 | P Gipson |
| Pair at nest, courtship display. |
| 18/03/10 | Great Crested Grebe | Lavell's Lake, Dinton Pastures CP | 2 | S C Smith |
| displaying with weed , tern hide. |
| 14/03/10 | Great Crested Grebe | Whiteknights Lake, Reading | 2 | P Gipson |
| Pr engaging in headshaking display, 1st this yr. |
| 04/03/10 | Great Crested Grebe | Woolhampton GPs | 13 | S A Graham |
12:30
| |
| 02/03/10 | Great Crested Grebe | Black Swan Lake, Dinton Pastures CP | 2 | A Rymer |
11:30
| pair. |
| 23/02/10 | Great Crested Grebe | Whiteknights Lake, Reading | 1 | P Doctor |
15:30
| |
| 12/02/10 | Great Crested Grebe | Lavell's Lake, Dinton Pastures CP | 2 | G Rowing |
16:00
| Doing 'Head-turning' courship at each other. |
| 07/02/10 | Great Crested Grebe | Lea Farm Lake | 2 | F J Cottington |
16:30
| Displaying pair. |
| 02/02/10 | Great Crested Grebe | Eversley GP | 5 | J M Clark |
| |
| 30/01/10 | Great Crested Grebe | Jubilee River | 1 | K P Duncan |
| between Manor Farm Weir and The Thames at Windsor. |