18th July: Little bit of migrant interest at the Bill incl 26 Sand Martin, 10 WW, 5 Sedge W, 4 Yellow Wag & a Cuckoo; 150 Med Gulls, 44 Sandwich Terns & 2 Balearics on the sea. Waders at Ferrybridge incl 36 Dunlin, 9 Sanderling, 8 Redshank, 2 Knot & Whimbrel.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 19, 2026 at 12:14 AM
18th July
17th July
17th July: A few migrants on a calm and at times very warm day at the Bill, with 3 Sedge W, 2 Yellow Wags, a Grasshopper W & a WW grounded + 65 Sand Martins & an LRP overhead. Just 4 Balearic Shearwaters on the sea, with 75 Med Gulls, 25 Cormorants west, 2 Sanderling & 2 YLGulls the best on the sea.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 17, 2026 at 11:46 PM
Their passage is already well underway at the 'better habitat' South Coast watchpoints but our first Grasshopper Warbler of the autumn just now from the mist-nets in the decidedly less optimal Crown Estate Field
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 17, 2026 at 8:11 AM
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Willow Warbler's another bird that in comparison with points not too far away has been a tad slow to make it to this part of the South Coast - this is our first autumn youngster today from the CEF mist-nets. A final far from special migrant tally from the nets of 3 Sedge W, 1 Grasshopper W & 1 WW.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 17, 2026 at 2:27 PM
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Ferrybridge this morning Knot, Whimbrel, Sanderling, 3 Turnstone
— Debra Saunders (@debbyseamist.bsky.social) July 17, 2026 at 8:21 AM
Our 1st summer/autumn Knot at Ferrybridge this morning
— Debra Saunders (@debbyseamist.bsky.social) July 17, 2026 at 3:21 PM
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16th July
Dark Crimson Underwing was a new moth for me this morning, courtesy of the @portlandbirdobs.bsky.social traps. A richly coloured & much-wanted species, completing my haul of the resident UK Catocala species #TeamMoth @dorsetmoths.bsky.social
— Phil Saunders (@beardybirder.bsky.social) July 16, 2026 at 2:00 PM
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15th July
Another good moth catch at the Obs last night: a Many-lined the best migrant, with Silver-spotted Veneer a decent back-up; lots of dispersers/recent colonists incl 14 Rusty Acorn Piercer amplana...
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 15, 2026 at 12:15 PM
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Puzzled enough by this early and not-quite-right 'Rhomboid Tortrix' to keep it and check it out and looks like a good candidate for Fen Tortrix A shepherdana - is that right anyone who knows it? If it is one, certainly new for Portland and seemingly pretty rare anywhere in these parts
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 15, 2026 at 1:15 PM
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The new for Portland moths keep coming: we're guessing this is a rather plain/dark form of Bog Snout Spaganothis pilleriana that @dunccrip.bsky.social has just brought us - caught last night in his garden at Weston. A heathland/east Dorset species in these parts.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 15, 2026 at 2:37 PM
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...also, it's an excellent year for Four Spotted, one of the local specials here, 50 from the Obs traps this morning is likely the highest ever single night total
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 15, 2026 at 12:21 PM
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14th July
A few from Ferrybridge the past few days
— Debra Saunders (@debbyseamist.bsky.social) July 14, 2026 at 5:31 PM
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Dark Crimson Underwing, new for the garden
— Debra Saunders (@debbyseamist.bsky.social) July 14, 2026 at 2:55 PM
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13th July
Always nice to see fresh juvenile Yellow-legged Gulls - one of four noted at @portlandbirdobs.bsky.social yesterday. Beautiful evening light #ukbirding
— Thomas Miller (@tmbirding.bsky.social) July 13, 2026 at 5:46 PM
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With it very windy overnight moth numbers/variety were well down on recent nights but singles of Dark Crimson Underwing and Rusty Acorn Piercer amplana - both first for the year - were catches of interest at the Obs.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 13, 2026 at 1:48 PM
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Many's the time we've been far more gripped by a snatched photo or video of questionable quality than we have by the pin-sharp, cropped to death and manipulated into another dimension offerings of the camo-clad brigade and a case in point was Lauren Fairfax's little digiscoped phone video clip of a Sunfish just off the Bill tip this morning! © Lauren Fairfax:
12th July
With the wind having strengthened several more notches birding on the land became hard and unproductive work today, with only a distinct uptick in waders at Ferrybridge to show for the efforts; totals there included 48 Dunlin, 5 Redshank, 3 Little Ringed Plovers and singles of Redshank, Whimbrel and Common Sandpiper, with the 5 Redshank also showing up at West Weare and an additional Whimbrel was logged at the Bill. Passerine passage was limited to passing Sand Martins, that included 60 through at Ferrybridge. Yellow-legged Gull passage gathered momentum, with up to 4 settled at the Bill and some of the same or others seen over the sea there. Also at sea, the Balearic Shearwater total got to around 20 and an Arctic Skua was amongst the other loggings.
Another Whimbrel dropped in at Ferrybridge this morning © Pete Saunders:
11th July
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 11, 2026 at 11:36 AM
10th July
More rammed-full moth-traps at the Obs last night: ongoing influx of Willow Ermines accounting for 536 of the night's total; migrants incl 118 Small Mottled Willow, 10 Small Marbled & first Beautiful Twitcher micalis of the yr; dispersers incl 2nds of Scarce Spindle Ermine & LS Pinion this week
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 10, 2026 at 3:06 PM
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1. Recently back from ten wonderful days surveying the Isle of Portland, Dorset. Quarries, cliffs, grasslands and the odd bit of woodland and wetland. Finding flowery areas was the key to finding exciting insects. pic.twitter.com/JWrKnFEmOu
— Steven Falk (@StevenFalk1) July 8, 2026
2. Nice bees seen/photographed included Carrot Mining Bee Andrena nitidiuscula, Bare-saddled Colletes Colletes similis, Coast Leafcutter Bee Megachile maritima and its cuckoo, the Large Sharp-tail Bee Coelioxys conoidea. The modern bee list must be well over 100 species now. pic.twitter.com/Cf07nMcnBf
— Steven Falk (@StevenFalk1) July 8, 2026
3. A stonewort-rich pool in Yeolands Quarry had lots of dragonfly activity including Red-veined Darter, Black-tailed Skimmer and Emperor. pic.twitter.com/zqmDAzyHag
— Steven Falk (@StevenFalk1) July 8, 2026
4. The number of scarce and unusual flies in that quarry was overwhelming, especially on Wild Carrot: Large Marsh Horsefly Tabanus autumnalis, the striking 'fleshfly' Macronychia dolini (a cleptoparasite of Ectemnius wasps), and the hoverfly Scaeva selenitica on one patch alone. pic.twitter.com/uM9E8UaT7q
— Steven Falk (@StevenFalk1) July 8, 2026
5. I made two visits to Chesil Beach to check the vegetated shingle and saltmarsh. The scarce Shingle Yellow-face Bee Hylaeus annularis was abundant on Carrot and Biting Stonecrop. Saltmarsh flies included the tiny Xanthocanace ranula and long-legged fly Hydrophorus oceanus. pic.twitter.com/lH7l0BO0hR
— Steven Falk (@StevenFalk1) July 8, 2026
6. Beetles seen included the rare chafer Amphimallon falleni, the Tawny Longhorn Paracorymbia fulva and Bloody-nosed beetle Timarcha tenebricosa, clambering over Madder (that's like Strawberries and cream). I also saw my first adult Southern Green Shieldbug Nezara viridula. pic.twitter.com/eRv6zi6kSA
— Steven Falk (@StevenFalk1) July 8, 2026
7. I've never seen such an abundance of broomrapes before. On Portland they were mainly Ivy Broomrape but Carrot Broomrape occurs along Chesil Beach. The rare & protected Portland Sea-lavender (endemic to Portland) grows on cliff ledges, usually alongside Golden Samphire. pic.twitter.com/ZcBWlqgs7d
— Steven Falk (@StevenFalk1) July 8, 2026
8. The Bird Observatory garden never fails to deliver: the hoverfly Lapposyrphus lapponicus (25 yrs since I last saw one), the scarce Chrysotoxum elegans (common as usual), also the rare parasite fly Townsendiellomyia nidicola (attacks Brown-tail Moth which I hate). pic.twitter.com/TOhAvsriJO
— Steven Falk (@StevenFalk1) July 8, 2026
9. Can't wait to get back there again. pic.twitter.com/njM2JYisQx
— Steven Falk (@StevenFalk1) July 8, 2026
9th July
9th July: Despite heat-restricted coverage there was increased variety at the Bill today, with 34 Sand Martins, 2 LRP (1 by day & 1 via nocmig), 2 Com Sands & singles of Grey Heron, Grey Wag, Sedge W & Serin on the land; sea quiet with shearwaters virtually absent. LRP & Whimbrel at Ferrybridge.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 9, 2026 at 11:15 PM
The Serin's just pitched in a tree-top at the Obs
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 9, 2026 at 8:51 AM
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First departing juvenile Sedge W of the autumn from the Crown Estate Field nets just now; male Serin's again put in a couple of appearances at the Obs this mrng
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 9, 2026 at 8:25 AM
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With the Ferrybridge sandflats hosting the usual hot weather miscellany of dog-walkers, watersport afficionados and other customary oddballs the waders don't get much of a look in other than very early or very late - this Whimbrel was there early doors © Pete Saunders:
A Many-lined the pick of a bumper catch in the Obs gdn moth-traps last night; big influx of 550 Willow Ermines; 161 Small Mottled Willows, 3 vitrealis, 2 Small Marbled & a Vestal among the migrants; lots of nice dispersers with Lesser Cream Wave & Lesser Spotted Pinion about the best for here.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 9, 2026 at 12:18 PM
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Grass Emerald, not a rare moth but new for Sea Mist. No. 382 macro moth for the garden
— Debra Saunders (@debbyseamist.bsky.social) July 9, 2026 at 3:39 PM
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8th July
8th July: Two surprises out of the heat today, with an early doors Serin at the Obs and the serendipitous flushing of a Quail on East Cliffs at the Bill. Double figures of Balearics remained offshore, an Arctic Skua passed by and a Yellow Wagtail and more Sand Martins were overhead.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 8, 2026 at 5:19 PM
The nocmig recorder was still running when the Serin did an early morning fly past of the Obs patio - nearly but not quite drowned out by the cacophony of Goldfinches and Wood Pigeons:
Another evening, another local micro. @jameshammond.bsky.social's sighting of a few at the weekend reminded us we hadn't seen Coast Groundling Caryocolum vicinella this century so we checked out the Sea Campion and adjacent shingle on Chesil at Ferrybridge for them at dusk...
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 8, 2026 at 11:21 PM
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...we remember them being pretty numerous there back in the 1990s and they still were this evening, with a lot of them happily settled right out on the bare shingle that was no doubt still comfortingly warm after all of today's hot sunshine.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 8, 2026 at 11:26 PM
7th July
7th July: Beginning to get pretty hot again which curtailed fieldwork. A raft of 18 Balearic Shearwaters becalmed off the Bill at dawn likely accounted for the majority of their later reports, with 12 Common Scoters the only movers of note on the sea. Overhead, 26 more Sand Martins departed south.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 8, 2026 at 12:19 AM
Last couple of night's mothing at the Obs have been good for variety although not particularly busy on the migrant front. Small Mottled Willow back up to nearly 200 last night, also Blair's Mocha a first for the yr; less than annual waifs and strays incl things like Gold W, Mocha & Bulrush Wainscot
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 7, 2026 at 4:15 PM
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Another evening dusking for the super-rare tineid Little Ghost borreonella - this time on the screes above Chesil Cove where it's never been recorded before - was successful with 3 netted and sev others seen. Likely been here since time out of mind without ever before being seen by human eyes!
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 8, 2026 at 12:58 AM
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Never a dull trip to Portland! This Ischnoscia borreonella was definitely the stand-out moth of the weekend, a real surprise to @josscarr.bsky.social @hwitts.bsky.social and I as we failed to find Eudarcia richardsoni
— James Hammond (@jamesehammond.bsky.social) July 7, 2026 at 6:22 PM
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In classic Portland fashion there was interesting stuff everywhere we went, like these Small marbled / Eublemma parva larvae and adults, feeding on Golden samphire / Limbarda crithmoides along the rocky shore
— James Hammond (@jamesehammond.bsky.social) July 7, 2026 at 6:22 PM
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A particularly interesting sighting was half a dozen Caryocolum vicinella on Chesil beach. I never see any Caryocolum in numbers, so seeing so many is a real event. Most were resting on the shingle after dark, or even roosting within the rocks, with us disturbing them as we dug pitfall traps
— James Hammond (@jamesehammond.bsky.social) July 7, 2026 at 6:22 PM
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Another springtail to find this summer! ☀️ Fab photo from @josscarr.bsky.social of Fasciosminthurus quinquefasciatus from Dorset yesterday. The 1st UK record outside Cornwall, where it was found new to Britain 2 yrs ago! www.researchgate.net/publication/... Can we track its expansion further?
— James McCulloch (@jamesimcc.bsky.social) July 6, 2026 at 4:21 PM
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6th July
6th July: Samey conditions and samey birds today, with the only new migrants at the Bill being 46 Sand Martins leaving to the south & 16 Common Scoter through on the sea; a few Balearic Shearwaters were offshore with the gull flocks but for the most part they were settled and tricky to count
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 6, 2026 at 10:56 PM
A fair-sized whale lingering in view - tail flukes seen several times - for 5 minutes c2 miles west of the Coastwatch lookout at the Bill at 8.45 this evening per Dave Parker. Just having a look for it now at last light but nothing immediately visible.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 6, 2026 at 9:33 PM
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Fun last couple of evenings on the Penn's Weare screes, initially with James Hammond and others from the @britentsoc.bsky.social group ostensibly seeking Richardson's Case-bearer at its classic location. No joy with richardsoni but a tineid potted by James turned out to be Ischnoscia borreonella...
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 6, 2026 at 4:01 PM
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...aka Little Ghost - great vernacular Messrs Parson & Sterling! - perhaps the first time it's been seen at this site for more than 100 yrs. Returned last evening and on an adjacent scree potted three more and saw sev others flying - seems as though it's far easier here than at the only currently...
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 6, 2026 at 4:06 PM
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...known site at Sheat Quarry, Southwell. As usual, plenty of other bonus local specials incl sev Beech-green Carpets (think that Portland's still its only site in Dorset) & lots of Portland Ribbon Waves
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 6, 2026 at 4:10 PM
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5th July
5th July: A few arrivals on the land today incl a GSWoodpecker at the Bill, 9 Swifts & 2 Sand Martins leaving overhead & 11 Dunlin & 10 Ringed Plovers joining the lingering LRP at Ferrybridge. Still c40 Balearic Shearwaters off the Bill, an inc to c300 Manx + 28 Com Scoter & 18 Sandwich Terns thru
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 6, 2026 at 12:41 AM
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Feel for moth dispersal/migration getting a bit of momentum last night incl a big arrival of Garden Grass-moth culmella and Marbled Piercer splendana at the Obs; Small Mottled Willows up to 70, with 4 Small Marbled & singles of Vestal & Bordered Straw amongst the scarces there...
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 6, 2026 at 1:05 AM
...best rarity of the night a Scarce Spindle Ermine irrorella at LepiLED on the Penn's Weare screes whilst targeting local micros - only the fourth for Portland after the first three last year
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 6, 2026 at 1:09 AM
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Big thanks to Gavin Broad and Mike Wilson for organising such a successful @britentsoc.bsky.social weekend at the Obs - so many really exciting discoveries to report in due course!
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 5, 2026 at 6:41 PM
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4th July
5th July: Balearics dominated the returns on the shearwater front, with at least 62 logged at the Bill, where Med Gulls were still on the up & 13 Com Scoter & singles of Great & Arctic Skua passed thru. Quiet on the land, with a Dunlin at the Bill, an LRP at Ferrybridge & a few more departing Swifts
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 5, 2026 at 12:59 AM
3rd July
A diary date for Obs members: it's only a fortnight until this year's AGM that'll be held at the Obs at 4:30pm on Saturday 18th July - if the mental stimulation of the meeting isn't enough for you then we will have very good refreshments on offer afterwards! drive.google.com/file/d/1437W...
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 3, 2026 at 4:20 PM
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3rd July: More in the way of numbers at the Bill today, with 2 Common Sands & a Greenshank on/over on the land & 200 Manx, 46 Balearics, 36 Med Gulls, 23 Sandwich Terns, 13 Com Scoter & 2 Arctic Skuas thru on the sea. Also an LRP at Ferrybridge & a Com Scoter in Portland Hbr.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 3, 2026 at 11:34 PM
A bit like last year, we're struggling to get amongst the Storm Petrels at the moment: another luring attempt at the Bill tip last night saw a few attracted - up to 3 at a time after midnight - but only a single trapped. It got better later in the summer last year so still hopeful for better rewards
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 3, 2026 at 10:07 AM
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2nd July
2nd July: A little bit busier at the Bill today, particularly offshore where the Manx & Balearic Shearwaters totals were back up to c500 & c25 respectively; 17 Common Scoter & 2 Curlews also thru on the sea. Singles of Dunlin & Common Sand grounded at the Bill, with a trickle of Swifts overhead.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 2, 2026 at 10:42 PM
1st July
1st July: Only cursory coverage of land and sea at the Bill today, with 9 Balearic Shearwaters & an Arctic Skua through offshore and 5 Sand Martins departing overhead the only worthwhile sightings
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 2, 2026 at 12:00 AM
30th June
30th June: The sea's providing most of the interest at the moment, with 237 Manx & 43 Balearic Shearwaters, 56 Med Gulls, 37 Com Scoter & 36 LBBGulls among the day's totals at the Bill. The sad sight of departing Swifts continued but there was otherwise little of note on/overhead on the land.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) July 1, 2026 at 12:10 AM
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Not a bad migrant catch in last night's Obs moth-traps incl a notable arrival of 8 Small Marbleds; 38 Small Mottled Willows and a Vestal the best of the rest
— Portland Bird Observatory (@portlandbirdobs.bsky.social) June 30, 2026 at 10:11 AM
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Probably should have run more than just the one moth-trap last night in our garden at the Grove: another 3 Small Marbleds to add to the night's tally + another Small Ranunculus - the second of the latter in the last three nights so maybe they're heading towards getting established in these parts
— Portland Bird Observatory (@portlandbirdobs.bsky.social) June 30, 2026 at 6:09 PM
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