Wednesday, 19 August 2026

Weather conditions today turned fresher with a force 4 Westerly wind, rougher seas (Sea State 4), very good visibility, a temperature of 18°C, and some afternoon showers.

A total of 84 Grey Seals were logged around the coastline, including 38 at Henllwyn, 39 across various sites (31 at the East South End, three at the West South End, three at the North End, one at Traeth Ffynnon, and one at West Narrows), four at Carreg yr Honwy, and three at Solfach. In addition, marine observations yielded six Lion's Mane Jellyfish and two Moon Jellyfish off the South End.

Lion's Mane Jellyfish Ogof Hir (c) Phoebe Moss

Insects recorded across the island included 200 Pyrausta despicata at Narrows, 14 Rush Veneer moths, 12 Silver Y moths, eight Painted Ladies, five Meadow Browns, two Large Whites, two Red Admirals, a Green-veined White, and a single Migrant Hawker.

Offshore bird movement included 159 Gannets (139 passing in an hour in the early morning off the West Coast) and 87 Manx Shearwaters. Also recorded in coastal waters and roosts were 27 Shags, 16 Sandwich Terns, seven Cormorants, four Mediterranean Gulls, four Black-headed Gulls, two Kittiwakes, a Fulmar, a Common Gull, and a Purple Sandpiper at Carreg yr Honwy.

Wader and wildfowl counts featured 35 Curlews, 29 Turnstones, four Grey Herons, four Whimbrels, three Moorhens, three Redshanks, two Common Sandpipers, and a single Dunlin. Non-breeding gulls included 11 Herring Gulls, five Great Black-backed Gulls, and four Lesser Black-backed Gulls.

Passerine and landbird activity was highlighted by 31 Swallows, 25 Linnets, 11 Choughs, seven Rock Pipits, five Willow Warblers,  four Meadow Pipits, four Stonechats, a Chiffchaff, a Wheatear, and a single Peregrine over the Mountain.

Tuesday, 18 August 2026

Conditions were settled with a force 3 South-Westerly wind, moderate seas (Sea State 3), good visibility, and a temperature of 18°C.

A high count of 183 Grey Seals was recorded around the island, including 95 at Henllwyn, 38 at Carreg yr Henwy, 48 across other sites (42 at the South End, three at the North End, and three on the East Side), and two at Solfach. A Grey Seal on the South End was spotted with a small yellow tag, which was later confirmed to be from RSPCA Stapeley Grange where it was rehabilitated. Off the North End, eight Common Dolphins (including a calf/juvenile) were observed. A Wood Mouse was noted on the East Side and 30 Freshwater Eels were discovered in Pwll Cain, 10 of which were relocated to Pwll Gareth as the pond has now dried up leaving with only some wet mud remaining in the pond now.

The Grey Seal with the flipper tag in South End (c) Phoebe Moss

Insects featured 300 Pyrausta despicata moths near Narrows, 50 Rush Veneer moths, 14 Silver Y moths, 10 Common Blues, nine Painted Ladies, eight Graylings, five Small Tortoiseshells, four Large Whites, four Meadow Browns, three Green-veined Whites, three Small Coppers, two Migrant Hawkers, two Mullein Wave moths, and a single Red Admiral.

Some seabirds movement was apparent with the highlight being a single Little Tern noted passing south off the West Coast. Other species included 104 Gannets passing offshore, 380 Manx Shearwaters moving south off the West Coast, 60 Shags, 39 Sandwich Terns, 36 Kittiwakes, eight Cormorants, seven Fulmars, three Arctic Terns, two Mediterranean Gulls, a Guillemot on the East Side and a Common Gull.

Waders and wildfowl recorded across the island included 50 Oystercatchers, 42 Turnstones, 41 Curlews, nine Mallards, nine Redshanks, eight Grey Herons, five Moorhens, five Common Sandpipers, five Whimbrels, four Common Scoters off the West Coast, and two Black-headed Gulls. Gull counts were rounded out by 50 Herring Gulls, 16 Great Black-backed Gulls, and 14 Lesser Black-backed Gulls.

Landbirds and passerines were led by 62 Swallows, 21 Choughs, 20 Magpies, 13 Woodpigeons,  seven Willow Warblers, seven Rock Pipits, six Meadow Pipits, three Stonechats, two House Martins, two Robins, two Wheatears, a Chiffchaff and a juvenile Peregrine on the East Side.