Sunday, 23 August 2026

A light force 4 Northerly wind brought smooth conditions with Sea State 2, good visibility marred by severe heat haze, dry weather, and a peak temperature of 18°C.

Landbirds and passerines produced soe movement throughout the morning, the highlight being a female-type Redstart above Nant. Eight Tree Pipits, seven Grey Wagtails, 10 Alba Wagtails, 36 Swallows, three House Martins, a Sand Martin, 11 Willow Warblers, 10 Robins, four Chiffchaffs, five Spotted Flycatchers, three Wheatears, two Stonechats, two Blackcaps, two Woodpigeons, two Linnets, a Song Thrush, a Sedge Warbler, a Whitethroat were also spotted.

Spotted Flyactcher caught at Nant (c) Ezra Sherwell

Seabird and offshore passage was generally slow with just 154 Manx Shearwaters moving, however, a mixture of Sandwich and Arctic Tern were moving S|outh producing final counts of 43 Sandwich Terns and 10 Arctic Terns. Other seabird counts featured a second-calendar-year Little Gull flying north off the West Coast, and eight Mediterranean Gulls, 55 Gannets, 30 Shags, five Fulmars, a Cormorant, and a Shelduck that landed on the sea off Carreg yr Honwy. The first Yellow-legged Gull of the year was spotted during survey work off the East Side showing classic juvenile plumage characteristics.

Wader and coastal bird counts gathered around the shores included 19 Curlews at Carreg yr Honwy, nine Oystercatchers at Carreg yr Honwy, five Grey Herons, three Ringed Plovers, two Turnstones at Carreg yr Honwy, a Whimbrel, a Common Sandpiper, a Dunlin at Carreg yr Honwy, and a Little Egret seen heading south off the West Coast. Raptor sightings featured four Peregrines (including an adult pair and a young male on the East Side), a female Kestrel at the Observatory, and a Sparrowhawk.

Marine mammal encounters off the West Coast were exceptional, logged by seven Risso's Dolphins (moving in groups of four and three), five Common Dolphins, and a single Harbour Porpoise. Invertebrate records included two Migrant Hawkers, four Painted Ladies, two Graylings, two Silver Ys, an Orange Swift, a Red Admiral and a Common Blue.

Saturday, 22 August 2026

Northerly winds at force 4 provided good visibility, moderate seas at Sea State 3, and a temperature of 17°C.

Seabird movement was much lower today with 65 Manx Shearwaters, 19 Gannets, three Sandwich Terns, three Cormorants, and two Shags recorded. Waders logged across the island included 35 Oystercatchers, 20 Curlews, six Redshanks, six Turnstones, three Ringed Plovers, a Dunlin and a Whimbrel. Raptor sightings featured a Peregrine at the South End and a Sparrowhawk at the Observatory.

Passerine counts included a Grey Wagtail and seven White Wagtail on the South End, 33 Swallows, 12 Choughs, 10 Woodpigeons, six Willow Warblers, six Meadow Pipits, five Rock Pipits, five Stonechats, four Robins, four Chiffchaffs, three Greenland Wheatears at Narrows, two Pied Wagtails, two Whitethroats, two Blackcaps and two Linnets.

White Wagtail on the South End (c) Ezra Sherwell

Insect records were varied, headlined by three Migrant Hawkers, seven Meadow Browns, six Common Blues, three Silver Y moths, three Painted Ladies, two Red Admirals, a Small Copper, a Green-veined White, and a Humming-bird Hawk-moth at the Observatory.

Friday, 21 August 2026

Temperatures today came in at 18°C with overall excellent visibility despite several showers moving through in the morning. A brisk force 4 Northerly wind and sea state 4 winds brought some continued seabird passage. The bulk of this was 1,169 Manx Shearwaters, however, a selection of other species were also noted including 50 Common Scoters, 48 Gannets, 46 Kittiwakes, three Fulmars, two Guillemots, two Puffins, and a single Razorbill. Terns were actively moving as well, featuring two Roseate Terns flying south off Solfach, 23 Sandwich Terns, five Arctic Terns, and two Common Terns. Gull activity off the South End was also notable, with 21 Black-headed Gulls, 16 Mediterranean Gulls, and a single Common Gull all tracking north.

Waders and coastal species logged across the island included 23 Curlews, 21 Shags, 10 Ringed Plovers, seven Turnstones, three Grey Herons, three Redshanks, two Dunlin and two Whimbrels, many of which were observed moving onto or through the island. Raptors on the wing featured two Sparrowhawks and two Peregrines.

Landbirds and passerines were led by a passage of 43 Alba Wagtails moving south out to sea off the South End. Other landbird counts included 50 Swallows, 25 Meadow Pipits, nine Wheatears, five Woodpigeons, four Rock Pipits, four Willow Warblers and two Chiffchaffs.

Coastal mammalian counts revealed an impressive total of 168 Grey Seals around the island, with 111 gathered at Henllwyn, 44 scattered around other sites, 10 at Carreg yr Honwy, three seal pups at the South End, and a single seal at Solfach. Cetaceans were represented by three Risso's Dolphins (two adults and a calf) seen off the South End.

Grey Seal pup on the South End (c) Phoebe Moss

Insect recordings were modest under the windy conditions, highlighted by a Humming-bird Hawk-moth at the Observatory alongside five Painted Ladies, three Red Admirals, and two Speckled Woods.

Thursday, 20 August 2026

 A day of fresh force 6 northerly winds, excellent visibility and sea state 5 brought about favorable seawatching conditions with dedicated watches conducted from the South End in the morning and a short watch from the North End in the evening. Temperatures rose to a maximum of 17°C and some scattered showers moved through the island during the day. Most notable was a record of eight Roseate Terns seen passing north off the South End, four of which were soon also picked up from the Observatory. A selection of other tern species were also observed moving throughout the day, although the majority of passage occurred between 6:45-9:30. This included 57 Sandwich Terns (52 heading north off the South End and five at Carreg yr Honwy), 20 Common Terns (18 off the South End in small flocks and two in the evening off the North End), and 14 Arctic Terns passing the South End. The morning seawatch also produced the first Little Gull record of the year moving north past the South End. Offshore counts were bolstered by 1,232 Manx Shearwaters (928 off the North End, including a raft of c.50, and 304 off the South End), 147 Gannets, 67 Kittiwakes, 12 Fulmars and five Mediterranean Gulls.

Waders and other coastal species recorded included 20 Curlews, 19 Oystercatchers, nine Turnstones, 32 Shags, eight Black-headed Gulls, four Cormorants, four Grey Herons, two Whimbrels and a Dunlin.

Landbirds across the island were led by 21 Swallows, 14 Linnets, nine Meadow Pipits, seven Woodpigeons, six Rock Pipits, five Stonechats, five Wheatears, four Willow Warblers and a House Martin.

Around the coast, Grey Seal counts reached 147 individuals, comprising 93 at Henllwyn, 40 at the South End (including three newly recorded pups), seven at Carreg yr Honwy, three along the West Coast, two at the North End, one at Solfach, and one at Traeth Ffynnon.


One of the new Grey Seal pups found on the South End (c) Phoebe Moss

Insect activity was quiet under the cooler, windier conditions, yielding three Common Blues, three Painted Ladies, four Meadow Browns, two Red Admirals, and a single Silver Y moth.

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.