JFC's Birding: 17th April, 2019 Beachy Head Sea-fog with poor visibility mild wind light and variable

We joined RAB and sea-watch from 06.00-11.00 with sea-fog and poor visibility all morning. We were joined for part of the time by RE and LP. Even in the fog, an excellent movement was taking place and our best day ever for Mediterranean Gulls. RE also covered Birling lane area, Birling loop, Belle Tout wood, the Cornish Farm track and Shooters Bottom. LP covered the sites on the Headland, Shooters Bottom and Belle Tout wood and after the sea-watch we covered Old Trapping Area, Hotel Garden, Icky Ridge and the radio mast bushes and Shooters Bottom.
A good arrival of Willow Warblers, Blackcaps with 2 Short-eared Owls were the highlight.
Combined totals:

Great-crested Grebe 4 on the sea
Fulmar 8 on the sea
Gannet 84 E
Little Egret 2 moving E low over the sea and a long way out.
Brent Goose 182 E
Shelduck 2 E
Gadwall 1 E
Teal 5 E
Common Scoter 218 E
Kestrel 2
Peregrine 1
Red-legged Partridge 2
Grey Plover 18 E
Dunlin 2 E
Whimbrel 47 E
Curlew 1 E
Arctic Skua 16 E
Bonxie 2 E
Mediterranean Gull 190 E
Black-headed Gull 43 E
Common Gull 62 E
Sandwich Tern 134 E
Commic Tern 28 E
Little Tern 1 E
Collared Dove 2 Birling lane (appeared to come in)
Short-eared Owl 2 (1 B/T area and 1 Hotel Garden)
Green Woodpecker 1
SandMartin 3 in off the sea
Swallow 12 (7 in off the sea)
Tree Pipit 1 over the Headland
Rock Pipit 2 Birling (1 displaying)
Black Redstart 1 female type Hotel Garden
Common Redstart 1 male Old Trapping Area
Wheatear 2
Sedge Warbler 1 singing Hotel Garden
Blackcap 17 Headland
Chiffchaff 2
Willow Warbler c95+ Headland and Hodcombe
Jay 2 Radio mast bushes
Goldfinch 30

Small Copper butterfly 1
Red Admiral 1
Speckled Wood 1

On the journey home we saw 3 Brimstones and 1 Orange Tip butterflies.