31st August
30th August
Seems to have been an overnight fall of Convolvulus Hawks - 10 from the moth-traps in the Obs garden + 3 Striped Hawks. Fantastic!
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 30, 2025 at 9:55 AM
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Considering it was such a blustery night the Obs moth-traps were pretty busy with an obvious arrival of other more routine migrants. Elsewhere on the island another Convolvulus Hawk for John Lucas at Southwell
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 30, 2025 at 10:14 AM
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29th August
28th August
27th August
With passerine migration grinding to a halt in the face of increasingly turbulent conditions it was hoped that the sea might save the day, but 41 Balearic Shearwaters, 3 Arctic Skuas and a handful of routines off the Bill weren't really the sort of rewards to get pulses racing. The few passerines that were uncovered included singles of Reed Warbler, Firecrest and Siskin at the Bill, whilst waders didn't fare much better with 4 Knot and a Sanderling as good as it got at Ferrybridge.
After a couple of summers of unrelenting and often wholly unexpected rewards from the sea this year has thus far proved to be hugely disappointing, with even the old staples such as Balearic Shearwaters no better than sparse and erratic off the Bill; however, there's still plenty of time for our fortunes to change...© Martin Cade:
Receiving this trailcam photo of a Badger visiting a garden at Southwell a couple of nights ago (© Alan Mayell) reminded us that we hadn't made any recent efforts to ascertain whether there were still Badgers in the Obs garden after they'd successfully bred there earlier in the year...
...so it was a bit of a surprise having not had the slightest indication they were still about to find the trailcam here revealed the presence of several visiting some seed put out for them last night © Jodie Henderson:
26th August
Passenger for @alanlewiswildlife.bsky.social at Freshwater Bay the night's show-stopper migrant moth. Only modest increases in numbers at the Obs with no stand-out rares; small arrival/emergence of Western Conifer Seedbugs of interest
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 26, 2025 at 9:50 AM
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Passenger from Freshwater Bay, Portland last night; actually the fourth of the recent run here and perhaps this suggests local breeding? @portlandbirdobs.bsky.social
— alanlewiswildlife.bsky.social (@alanlewiswildlife.bsky.social) August 26, 2025 at 7:05 PM
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It's not been a great year so far for Convolvulus Hawk-moth, so very pleasing when this appeared next to the trap at Freshwater Bay, Portland, but no Striped Hawk-moth for me!
— alanlewiswildlife.bsky.social (@alanlewiswildlife.bsky.social) August 26, 2025 at 7:08 PM
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A few immigrant moths in last night’s traps including 3 Olive Tree Pearl, a Delicate and a Bordered Straw @migrantmothuk.bsky.social #mothsmatter
— Debra Saunders (@debbyseamist.bsky.social) August 26, 2025 at 3:03 PM
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25th August
Nightingale trapped at Culverwell
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 25, 2025 at 8:18 AM
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Wryneck trapped at the Obs
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 25, 2025 at 8:19 AM
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The Obs moth-traps were spectacularly lame for migrants overnight so a bit unexpected to get home and find a Passenger - the third for the island this autumn - in one of the Grove traps; also another Striped Hawk there. Weirdest catch at the Obs in recent nights a late Obscure Wainscot on 23rd.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 25, 2025 at 6:31 PM
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24th August
23rd August
Portland 23 Aug: Lesser Whitethroat and Hummingbird Hawkmoth at the Naval Cemetry. Redstart in Admiralty Quarry Single Knot at Ferrybridge among the usual suspects. @portlandbirdobs.bsky.social
— Steve M (@steveweynature.bsky.social) August 23, 2025 at 5:56 PM
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Amongst all the local-breds some small signs of new moth migration last night incl singles of Passenger (seventh for Portland) and Olive Spinner oleastrella (second for Portland, first for the Obs) at the Obs; 2 Striped Hawks and a Convolvulus Hawk amongst the routines.
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 23, 2025 at 9:33 AM
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22nd August
21st August
Another exceedingly pleasant day, with a cool and overcast morning resulting in a steady procession of new arrivals that gradually tailed off as the heat of the afternoon set in. Whilst Willow Warblers were once again on top with c150 present at the Bill, there was a great deal more variety on offer there compared to yesterday, including 6 Spotted Flycatchers, 4 Redstarts, 2 Pied Flycatchers, 2 Blackcaps and singles of Purple Sandpiper, Reed Warbler and Lesser Whitethroat. Overhead passage was also more of a feature, with 65 Yellow Wagtails (in addition to the 18 settled along the East Cliffs), 50 Swift, 20 Tree Pipits, 6 Grey Wagtails, 2 Curlew and a Golden Plover over the Bill. For the first time this week sea passage deserved at least a passing mention, with 34 Balearic Shearwaters, 6 Arctic Skuas, 2 Manx Shearwaters, 2 Dunlin and a Whimbrel easily the best return of late from the Bill. New waders continued to show up at Ferrybridge, where 3 Greenshanks and a Black-tailed Godwit dropped in to join the likes of the lingering Grey Plover.
At the Bill, Willow Warbler is certainly the migrant of the moment with the steady throughput yesterday and today further boosting the totals for what was already the best autumn showing of them for many years © Martin Cade:
Reduced numbers in the moth-traps in much chillier conditions overnight but still some quality, notably a Striped Hawk and a Clifden Nonpareil at the Obs and a Striped Hawk and a Bedstraw Hawk from John Lucas' garden at Southwell
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 21, 2025 at 11:29 AM
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20th August
little stint, grey plover, knot, redshank ferrybridge, still some sanderling in amongst the dunlin & ringed plover. half doz wheatear n single clouded yellow
— andylportland.bsky.social (@andylportland.bsky.social) August 20, 2025 at 3:03 PM
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A bit too breezy overnight but stayed very mild and two of the sheltered moth-traps in the Obs garden we're rammed with noctuids in particular. Highest totals so far this yr of DSGrass, Turnip, Bordered Straw and Scarce Bordered Straw. Marsh Oblique-barred a second for Portland and first for the Obs
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 20, 2025 at 12:56 PM
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A good selection of immigrant moths in last night’s trap. Star of the show was Striped Hawkmoth with supporting cast of 3 Bordered Straw, 2 Scarce Bordered Straw, White-speck, 11 Dark Sword-grass, 5 Olive-tree Pearl and several of the other common immigrants #mothsmatter @migrantmothuk.bsky.social
— Debra Saunders (@debbyseamist.bsky.social) August 20, 2025 at 6:24 PM
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19th August
18th August
There was little change today in either the strength of the wind or the state of migration, with even the most sheltered spots revealing little in the way of new arrivals. A total of 30 Wheatears was down considerably on recent days, with 2 Golden Plovers, the first Hobby of the autumn and a single Grasshopper Warbler the only other sightings of note at the Bill. The day's oddity came on the sea, where a single Brent Goose was seen briefly settled on the sea below the Obs; a lone passing Balearic Shearwater was the only seabird of note there. Wader variety at Ferrybridge included 360 Ringed Plovers, 160 Dunlin, 7 Sanderling, 2 Curlew, and singles of Knot, Redshank, Whimbrel and Bar-tailed Godwit.
Two long-range waterfowl oddities: the unseasonable Dark-bellied Brent Goose flew in and settled off East Cliffs for a while before departing to the east...
17th August
16th August
Fewer migrant moths last night but still some nice things on the wing incl 3 Striped Hawks (singles at the Obs + for John Lucas at Southwell & Nigel Jones/Mark Edgeller at Freshwater Bay); 4 Small Marbled, 2 Vestal and singles of catalaunalis, Ni and Dewick's Plusia amongst others at the Obs
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 16, 2025 at 9:42 AM
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So many Striped Hawks that we're running out of suitable large pots for them - this one from our garden at the Grove is the fourth from the island last night
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 16, 2025 at 3:53 PM
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15th August
Today's switch round to north-easterlies saw a much appreciated return to migratory proceedings, with a varied selection of new arrivals for what can be a rather fitful period for early autumn departers. Whilst Willow Warblers and Wheatears made up the bulk of the day's grounded migrants with 75 and 60 apiece, a fine supporting cast of 7 Grasshopper Warblers, 3 Spotted Flycatchers, 3 Reed Warblers, 2 Garden Warblers, 2 Pied Flycatchers and a single Redstart livened up the Bill. Visible migration was also on the up with around 70 Swallows and 65 Sand Martins passing through during the first few hours of the morning, with a further 100 Sand Martins lingering over Top Fields well into the late afternoon. On the sea, a total of 105 Balearic Shearwaters marked only the third three-figure day count this year, with an additional 55 Manx Shearwaters, 16 Common Scoters and 3 Arctic Skuas the other sightings of note. Waders remained in good supply at Ferrybridge, including modest increases to 280 Ringed Plovers and 150 Dunlin, whilst a flying ant hatch there during the evening attracted a feeding frenzy of c600 Mediterranean Gulls.
Doesn't take much to beat our hitherto woefully inadequate best ringing day of the year (106 back in April) so shouldn't shout too loudly about reaching 165 today. However, a fun day in beautiful weather; lots of variety incl 7 Grasshopper Warblers, 4 Storm Petrels...oh, and 51 House Sparrows!
— Portland Bird Observatory (@portlandbirdobs.bsky.social)
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Superb pelagic from Portland @naturetrektours data to @MARINElife_UK 5 Risso's Dolphin, 12 Common Dolphin, Harbour Porpoise, 5 Grey Seals, Osprey S 17:30, 17 Balearic & 3 Manx Shearwater, 15 Storm-petrel, Arctic, Sandwich & Commic Tern, 80 Gannet, 20 Sand Martin, 3 Small White pic.twitter.com/fYAOuUlYAm
— Tom Brereton (@tom_m_brereton) August 15, 2025
Lots more migrant moths at the Obs last night incl 6 more Toadflax Pearl and a Convolvulus Hawk. Nice selection of strays/Portland rares around the island incl Beautiful Yellow Underwing and Acleris emargana at the Obs, Epinotia immundana at Sweethill for Debby and Poplar Kitten at Weston for Dunc
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 15, 2025 at 9:28 PM
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14th August
Numbers-wise, migration remained at a fairly low ebb but there was just enough variety to make it worth staying out even in the blazing sunshine and soaring temperature of the afternoon. In Portland terms, a Ruff at Ferrybridge was bird of the day, with 2 Knot there, a Marsh Harrier over Weston and singles of Greenshank and Pied Flycatcher at the Bill all providing further interest. Amongst the routines, Wheatear reached 25 on the ground at the Bill but everything else struggled to make an impression; over-flyers were slightly more conspicuous and included 150 Swallows and 75 Sand Martins through at the Bill. A Common Gull through off the Bill was the first for the autumn but the 3 Balearic Shearwaters and single Arctic Skua also passing by there were what's become a typically lame return from the sea in recent days; the lingering Black Swan was also again off East Cliffs.
Always infrequent at Portland and often extremely skittish when they do appear, this evening's Ruff at Ferrybridge was unusual in being well-settled and showing nicely © Martin Cade:
Another ripping catch of migrant moths overnight at the Obs incl 17 Vestals, 4 Toadflax Pearls and an Old World Webworm + the first three figure total of Rush Veneers so far this year; elsewhere, a Striped Hawkmoth from Duncan Walbridge's garden at Weston
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 14, 2025 at 2:07 PM
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13th August
Some exciting overnight migrant mothing at the Obs, notably with Portland's sixth Passenger; a Toadflax Pearl catalaunalis was the first this year + a good selection of other scarces and a few more local hatches of eg dark Small Marbleds
— Portland Bird Observatory (@portlandbirdobs.bsky.social) August 13, 2025 at 11:08 AM
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The tuna off the Bill are still frustrating would-be photographers by never quite showing at their best when there's a camera pointing at them © Mike Trew:
12th August
Hard work in blazing sun and increasing heat today - especially as there didn't seem to be a lot about to make the toil worthwhile. Decent numbers of Swifts - including at least 100 over the Bill - passed through overhead, but amongst the passerines only Wheatear managed a double figure total at the Bill; a Redstart dropped in at Sweethill and a Knot was new at Ferrybridge but there was little else of note amongst the thin scatter of other migrants. Three Balearics and a single Manx Shearwater were the highlights from some very slow seawatching.
Redstart © Debby Saunders...
11th August
watched this tree pipit feeding to the sides of the track down to the RN cemetery. very little in the way of birds there or the common, just a single migrant willow warbler
— andylportland.bsky.social (@andylportland.bsky.social) August 11, 2025 at 3:48 PM
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looks like autumn ladies tresses have been out for a few days already at verne common, reasonable numbers but not great specimens on the parched field
— andylportland.bsky.social (@andylportland.bsky.social) August 11, 2025 at 3:50 PM
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