| Canada Goose | | |
| Greylag Goose | | |
| Mute Swan | | |
| Egyptian Goose | | |
| Mandarin Duck | | |
| Mallard | | |
| Common Scoter | | Heard calling over willows riverside park at 22:10. |
| Pheasant | | |
| Swift | 18.4.20 | |
| Cuckoo | | |
| Feral Pigeon | | |
| Stock Dove | | |
| Woodpigeon | | |
| Collared Dove | | |
| Moorhen | | |
| Coot | | |
| Great Crested Grebe | | |
| Ringed Plover | 4.4.20 | Flew over calling, looked to drop down into Dorney lake. |
| Lapwing | | |
| Common Tern | | |
| Black-headed Gull | | |
| Common Gull | | |
| Herring Gull | | |
| Lesser Black-backed Gull | | |
| Cormorant | | |
| Little Egret | | |
| Great White Egret | | |
| Grey Heron | | |
| Sparrowhawk | | |
| Red Kite | | |
| Buzzard | | |
| Little Owl | | Had this fly over calling and wasn’t sure what it was, but after listening to the alarm call in the collins guide, it couldn’t be anything else. |
| Tawny Owl | | |
| Kingfisher | | |
| Great Spotted Woodpecker | | |
| Green Woodpecker | | |
| Kestrel | | |
| Hobby | | |
| Ring-necked Parakeet | | |
| Jay | | |
| Magpie | | |
| Jackdaw | | |
| Rook | | |
| Carrion Crow | | |
| Coal Tit | | |
| Blue Tit | | |
| Great Tit | | |
| Sand Martin | | |
| Swallow | | |
| House Martin | 6.4.20 | Nine above my garden at 17:30 |
| Long-tailed Tit | | |
| Willow Warbler | | |
| Chiffchaff | | |
| Blackcap | | |
| Goldcrest | | |
| Wren | | |
| Starling | | |
| Song Thrush | | |
| Mistle Thrush | | |
| Blackbird | | |
| Robin | | |
| House Sparrow | | |
| Dunnock | | |
| Grey Wagtail | | |
| Pied Wagtail | | |
| Chaffinch | | |
| Bullfinch | | |
| Greenfinch | | |
| Goldfinch | | |