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22.09.2024  This great image of a Gannet with black eyes was taken locally by John Ovenden. The eye colour is an indication that this bird is a survivor of Avian Flu    ( see the article from the RSPB, at the bottom of this report, for more information )  JO


A cloudy day following overnight showers, winds were light from the South


20 Little Egrets flew East over Pontac Co-op this morning with a Spoonbill for company, heading for Le Hocq.


Today's visible migrants at Noirmont included a late Swift, a Sand Martin, 523 Swallows, 8 House Martins, 141 Meadow Pipits, 3 alba Wagtails and a Grey Wagtail. On the ground, or dropping in through the morning, were a Song Thrush, a Wheatear, 3 Stonechats, 6 Whitethroats, 10 Chiffchaffs, 2 Blackcaps, 4 Dartford Warblers, a Spotted Flycatcher, 10 Robins, a Marsh Harrier, a Peregrine, 2 Ravens and 2 Choughs. Passing offshore were a Mediterranean Gull, 4 Lesser Black-backed Gulls, a Sandwich Tern, a Grey Heron and 10 Bottle-nosed Dolphins.


On the Scrape this morning were 13 Teal, 4 Shovelers. 3 Snipe, a Redshank, a Marsh Harrier and a Cetti's Warbler.


At Petit Port were 62 Mediterranean Gulls, 5 Lesser Black-backed Gulls, 65 Great Black-backed Gulls, a Whimbrel and 22 Curlews.


3 Song Thrushes flew over Vallee des Vaux at height this morning where a Firecrest and 5 Chiffchaffs were also seen.


Evening update: In St Ouen's Bay were 17 Ringed Plovers, a Sanderling, 158 Great Black-backed Gulls and 9 Lesser Black-backed Gulls and at Corbiere were 3 Wheatears, 25 Great Black-backed Gulls, 2 Ravens and 2 Choughs.

At the Farmer's Cricket Ground in St Martin were 3 Yellow Wagtails, 5 alba Wagtails, a Grey Wagtail and 2 Swallows.

6 Cattle Egrets were at Grouville Marsh, 15 Redshanks were at St Aubin and 57 Brent Geese were at Bel Royal.

Black eyes in seabirds indicates bird flu survival

Scientists have discovered evidence that Northern Gannets can recover from bird flu and that unusual black iris coloration is linked to a previous HPAIV infection

Ness Amaral-Rogers

Posted 

Thu 4th May 2023

5 min read

  • The study also assessed the impact of HPAI on adult gannet survival at the largest gannet colony in the world - the Bass Rock, UK
  • The team found that at Bass Rock, adult survival between 2021 and 2022 was 42% lower than the average over the previous 10 years.

A new study has discovered evidence that Northern Gannets can recover from Highly Pathogenic Avian Influenza (HPAI) H5N1, with black irises, an indicator of a previous infection.


Scientists from multiple organisations investigated outbreak timings at colonies across their North Atlantic range. At their largest colony, Bass Rock, UK, a detailed study was conducted to estimate the impact of the virus on colony size, breeding success, adult survival, and whether Gannets were potentially able to recover from an infection.

Black irises – instead of the usual pale blue – were first seen in Gannets breeding on the Bass Rock in June 2022 with colour varying from completely black to mottled. The team took blood samples from 18 apparently healthy adult Gannets with both normal and black irises, which were tested for bird flu antibodies by APHA to determine whether the birds had been previously infected. Eight tested positive, of which seven had black irises.

Dr Jude Lane, RSPB Conservation Scientist and lead author of the study: “This has been a fascinating development and the discovery may prove a useful non-invasive diagnostic tool. The next steps are to understand its efficacy, if it applies to any other species and whether there are any detrimental impacts to the birds’ vision. Ophthalmology exams will also be needed to determine what is causing the black colouration.”

High Pathogenicity Avian Influenza Virus (HPAIV) has negatively impacted wild and domestic bird populations globally for decades. However, the current strain (HPAIV H5N1) has seen shifts in both the timings of outbreaks and species affected - including seabirds. Northern Gannets appeared especially severely impacted, but there was limited understanding of how their populations were affected.

High numbers of dead gannets were seen in Iceland during April last year followed by outbreaks in many Scottish colonies, Canada, Germany and Norway. By the end of June, outbreaks had occurred in five Canadian colonies and in the Channel Islands. Outbreaks in 12 UK and Ireland colonies followed in a clockwise pattern with the last infected colonies recorded in September. Unusually high mortality was recorded at all but one of the 41 monitored colonies (75 % of the 53 North Atlantic colonies), and sampling data was available for 58% of these, all with dead birds testing positive.

To better understand the impacts of HPAI, the team further investigated Bass Rock in the UK. Bass Rock is the world’s largest Gannet colony, home to over 150,000 birds at their peak. The team calculated that adult survival between 2021 and 2022 was 42% lower than the preceding 10-year average. The full extent of how many birds died during that period won’t be confirmed until the birds come back this breeding season.

The study was a collaboration between the RSPB, the University of Glasgow, the University of Edinburgh, Heriot Watt University and the Animal Plant Health Agency in partnership with the Scottish Seabird Centre.

Susan Davies, CEO of the Scottish Seabird Centre said: “Like many northern gannet colonies across the North Atlantic the Bass Rock was severely impacted in 2022 by highly pathogenic avian influenza. Due to the long running research effort on the Bass Rock, it was possible to gain important insights into the changes taking place in the colony with a strong link emerging between virus infection and the changing iris colour in these striking seabirds and the high level of nest failure within the study area.”

Seabirds are amongst the most threatened group of birds, out of the 25 species breeding here in the UK, 24 are Red or Amber on the UK list of Birds of Conservation Concern. The 2022 bird flu outbreak has provided another significant stressor to those already faced by our rapidly declining seabird populations. Quantifying and perhaps even mitigating its impact is therefore crucial if we hope to restore our seabird populations.


by Michael Dryden 15 May 2026
15.05.2026 A fine pair of Lesser Black-backed Gulls at Grosnez. MD Temperatures remained well below the norm for May, not helped by cloudy conditions and a northerly wind. Migrants are thin on the ground at the moment, but a Cuckoo was calling at Greve de Lecq, near the Prince of Wales and 2 Great Egrets flew over Mont les Vaux in St Aubin. Seen from a chilly Grosnez were a Manx Shearwater , 11 Common Terns , 2 Sandwich Terns , 8 Guillemots , 48 Gannets , just 6 Fulmars , 6 Cormorants , 5 Kittiwakes , 50 Lesser Black-backed Gulls, 15 Great Black-backed Gulls , 42 Swallows , 19 House Martins , a male Stonechat , a pair of Marsh Harriers , a pair of Buzzards and 2 Ravens . Around St Ouen's Pond from first light till mid-morning were 2 Sedge Warblers , a Whitethroat , 4 Wheatears , 12 Swifts , 25 Swallows , 16 House Martins , a singing Reed Bunting , a Stonechat , a female Shoveler , a Sparrowhawk , and a Peregrine . In Les Ormes Valley were a Garden Warbler , 2 Chiffchaffs , 2 Peregrines and 3 Marsh Harriers and a Whitethroat was singing on Chemin du Moulin in St Ouen. A pair of Shelduck was at Petit Port as usual, while at Gorselands were 6 Whitethroats , 2 Dartford Warblers , 3 Greenfinches , a Chough , 30+ Painted Lady Butterflies and a Small Tortoiseshell . At Kempt Tower pools were a male Shoveler , a Tufted Duck and another Whitethroat . On the North coast, at Les Platons were up to 12 Ravens , 5 Dartford Warblers , 7 Swallows , 3 House Martins, 5 Swifts , 3 Linnets , a Blackcap , a Kestrel and a Buzzard , plus a Swallowtail butterfly. Seen at Seymour were 26 Ringed Plovers , 8 Dunlin and a Bar-tailed Godwit . At Elizabeth Castle were 2 Whimbrels , a Wheatear , 20+ Linnets , 2 Little Egrets, 4 Swifts , a Blackbird and a Raven .
by Michael Dryden 14 May 2026
14.05.2026 This male is one of the Marsh Harriers currently breeding at St Ouen's Pond. MD A cold and blustery day with occasional showers in a strong northwest wind. A few birds passing Corbiere in the unpleasant conditions, prior to 8 am, included 4 Manx Shearwaters , 24 Guillemots , 5 Fulmars , 21 Gannets , a Sandwich Tern , 3 Kittiwakes , 13 Lesser Black-backed Gulls and a Whimbrel . At St Ouen's Pond were 15 Swifts , 8 House Martins , 20+ Sand Martins, a few Swallows , 2 male Shovelers and 5 Tufted Ducks . On the Scrape were the pair of Shelduck and the Barnacle Goose / Pink-footed Goose combo. A few waders at La Rocque included 5 Curlews and 6 Whimbrels . Evening update: At Seymour this evening were 45 Ringed Plovers , 12 Sanderlings , 23 Dunlin , 7 Little Egrets and a Lesser Black-backed Gull , while at Francheville Farm was a Cetti's Warbler singing in Little Valley and at Grouville Marsh were 12 Swifts , 20 Swallows , 25 House Martins and a Sparrowhawk .
by Michael Dryden 13 May 2026
13.05.2026 Jackdaws over La Rosiere. MD An unsettled day, with blustery showers and brighter periods and a strong westerly wind, cold for May at 14c. A Turtle Dove was seen walking along Rue des Maltieres in Grouville this afternoon, before flying off towards the allotments there. In the shelter of the Sandpits at La Braye this morning, were 35 Swifts , 40 Sand Martins , 35 Swallows , 4 Lesser Black-backed Gulls , 16 Tufted Ducks , 54 Coot , 3 Ravens , and 2 Choughs checking out the Sand Martin colony. At St Ouen's Pond were an immature Mediterranean Gull , up to 90 Sand Martins , 80 Swallows , 20 House Martins , 4 Swifts , a Sparrowhawk , 2 male Shovelers and 7 Tufted Ducks . Passing Corbiere first thing were 3 Manx Shearwaters , 14 Guillemots , 17 Gannets , a Fulmar , 3 Kittiwakes , 8 Lesser Black-backed Gulls , 74 Great Black-backed Gulls, 3 Cormorants and 3 Ravens . At Seymour this afternoon were 43 Sanderlings , 13 Dunlin , 28 Ringed Plovers, a Turnstone , and 2 Swifts , while in Grouville Marsh were30 Swallows and 8 House Martins and at Grands Vaux reservoir were 30 House Martins , a Sand Martin and 15 Swallows . Below : Today's out of season Mediterranean Gull over St Ouen's Pond against a grey sky.
by Michael Dryden 12 May 2026
12.05.2026 Great Black-backed Gulls , part of a group of nine birds, up and at it in today's beautiful conditions, at Grosnez. Image: MD A mostly fine day, with pristine visibility but a chilly northwest wind. On a relatively quiet day for the date, a Cuckoo heard calling near St John's Village was very welcome. At or passing Grosnez this morning were 55 Gannets , 3 Guillemots , 6 Cormorants , 3 Kittiwakes , 40+ Great Black-backed Gulls, 20 Lesser Black-backed Gulls , a flock of 22 Sanderlings , a Whimbrel , 82 Swallows , 13 House Martins , a migrant Kestrel heading North, a Peregrine , 2 Buzzards , 2 Marsh Harriers , 2 Wheatears , 5 Choughs and 2 Ravens . At Gorselands were 2 Dartford Warblers , a Whitethroat , 6 Painted Lady butterflies and one Swallowtail . On St Ouen's Pond Scrape were the Shelduck pair, an Oystercatcher on eggs, and 4 Lapwings . A Whitethroat was near the GaP Hide at the Sandpits. At Grouville Marsh early on were 2 Sedge Warblers , 20 Reed Warblers , 5 pairs of Cetti's Warblers , a pair of Bullfinches and a Sparrowhawk . On La Rue du Moulin de Bas was a singing Garden Warbler and a pair of Bullfinches . In St Catherine's Woods were another Bullfinch , 3 Firecrests , 2 Short-toed Treecreepers , good numbers of Blackcaps and Chiffchaffs , and a Long-tailed Tit .
by Michael Dryden 11 May 2026
11.05.2026 The Osprey over Corbiere this morning. Image: MD A mostly fine day, but feeling cool in a fresh northeast wind. A quiet morning at Corbiere was brightened up by the arrival of an Osprey from the southwest, with usual entourage of gulls and an ambitious Oystercatcher . Also seen at Corbiere were 10 Manx Shearwaters , 13 Guillemots , 6 Fulmars , 28 Gannets , 3 Cormorants , 7 Kittiwakes , 11 Lesser Black-backed Gulls , 44 Great Black-backed Gulls , 4 Curlews , 3 Sanderlings , a Swallow and 2 Swifts . In Petit Port Bay were a Shelduck , a Curlew , 2 Marsh Harriers and the usual Oystercatchers . Seen at St Ouen's Pond were 2 Shovelers , 2 Tufted Ducks , 11 Swifts , 4 House Martins, 3 Swallows and a Grey Heron . An Osprey seen briefly, high over the ridge behind the Pond was, presumably, the same bird seen at Corbiere earlier. On the Scrape was the pair of Shelduck , with 20+ Swifts , 10 Swallows , 20 Sand Martins , 4 House Martins, a Whitethroat and 2 Blackcaps also reported. A White Wagtail was at Charing Cross in St Helier. Over Vallee des Vaux were 13 Swifts and at Grouville Marsh were 6 Swifts , 8 House Martins , 15 Swallows , 2 Sedge Warblers and 15 Reed Warblers . At Dusk, 120+ House Martins , 40 Swallows and 4 Sedge Warblers were at Grouville Marsh.
by Michael Dryden 10 May 2026
10.05.2026 A Jay flying over La Rosiere, at Corbiere. Image: MD Yet another day of dodging rain, mainly dry with high cloud and a strong and gusty east-northeast wind. There was a better selection of birds to be seen from Corbiere than of late, and these included 28 Manx Shearwaters , 3 Common Scoters , 5 Guillemots , 4 Fulmars , 40 Gannets , 5 Cormorants , 4 Kittiwakes , 13 Lesser Black-backed Gulls , 56 Great Black-backed Gulls , 2 Dunlin , 8 Swifts and 18 Swallows in four hours. A Dartford Warbler was seen on the headland between Petit Port and La Pulente. On and around the Scrape were the pair of Shelduck , the male Shoveler , a pair of Oystercatchers , a Lapwing , a Common Sandpiper , 20 Swallows , 2 Reed Warblers , a pair of Stonechat , and 2 Swifts , while on St Ouen's Pond were hundreds of Swallows and Sand Martins, a Grey Heron, 4 Tufted Duck and 4 Great Black-backed Gulls . At Le Hurel were 123 Sanderlings , 16 Dunlin , a Bar-tailed Godwit and a Curlew . 17 Jackdaws were in a ploughed field at Rue de la Genestiere in St Martin. Thanks as always go to Jo Bramley for this video clip of the Common Sandpiper on the Scrape.
by Michael Dryden 9 May 2026
09.05.2026 This Barn Owl, which was ringed as an owlet at Greve de Lecq in 2023, was retrapped and released at St Ouen's Pond yesterday. Image courtesy of David Buxton. Rain to the south of the Island never quite reached Jersey, leaving a dry day of high cloud and sunnier periods in a fresh southeast wind. Beauport Common was a popular spot today with birds seen there including a Cuckoo , a Wheatear , 2 Stonechats , 2 Firecrests , a Goldcrest , a Blackcap and 9 Jackdaws , as well as at least 24 Painted Lady butterflies. 6 Whitethroats were seen an Noirmont. Seen at, or passing Grosnez this morning were a Yellow-legged Gull , 27 Lesser black-backed Gulls , a Guillemot , 14 Gannets , 2 Little Egrets far offshore, 9 Swifts , 17 Swallows , a Tree Pipit , 2 Yellow Wagtails , 2 Wheatears , a male Stonechat , and also 5 Bottle-nosed Dolphins . At St Ouen's Pond Scrape were a Redshank , a Dunlin , a Common Sandpiper, the Shelduck pair, the Oystercatcher pair and 3 Swifts . Waders at La Rocque included 3 Whimbrels , 2 Greenshanks and 12 Dunlin .  Evening update : In Grouville Bay this evening were 22 Sanderlings , 6 Dunlin , a Bar-tailed Godwit , 2 Curlews , 46 Oystercatchers and 2 Shelduck . Yesterday evening, at Noirmont, were 3 Whitethroats , 2 Great Spotted Woodpeckers , 2 Greenfinches , 11 Swallows and a Jackdaw .
by Michael Dryden 8 May 2026
08.05.2026 Reed Warbler at Kempt Tower pools MD A fair to fine day and becoming warm in a fresh southeast wind. Seen during a ringing session at the north end of St Ouen's Pond this morning were a male Whinchat , a Greenland Wheatear , 25 Sedge Warblers , 20 Reed Warblers , a singing Whitethroat , a Water Rail , a pair of Shelduck , a Grey Heron , 12 Swifts , 2 Ravens , a Barn Owl and a trickle of Swallows passing through. At the Sandpits were 12 Tufted Duck , a Shelduck , a Reed Warbler, a Cetti's Warbler, 60 Sand Martins and 6 Lesser Black-backe d Gulls. In Les Ormes Valley were 2 Garden Warblers, 3 Dartford Warblers , 2 Whitethroats and 2 Cetti's Warblers . A visit to Les Ecrehous saw 12 Common Terns , a Gannet , 80 Oystercatchers , 2 Grey Plovers , a Whimbrel and 2 Rock Pipits . Early on, passing Corbiere were a pair of Shelduck , 11 Gannets , 7 Swallows and 7 Bottle-nosed Dolphins and in Petit Port Bay were 2 Curlews , another pair of Shelduck and 78 Oystercatchers. Near the Desalination Plant at La Rosiere were 3 Tree Pipits which landed hear the Railway Walk, a Whitethroat , 5 Dartford Warblers including a family feeding young, a female Stonechat , a Blackcap and a Jay . A further 2 Whitethroats , a singing Dartford Warbler , 5 Swallows and a Blackcap were at Noirmont.
by Michael Dryden 7 May 2026
07.05.2026 Whitethroats are on the Island in good numbers at the moment. This male is holding territory very vocally, near the Scrape MD A dry but cold-feeling day in a fresh easterly wind. 2 Spoonbills flew over the Pond and Scrape mid-morning, but have not been relocated since. In the Scrape area were 4 Whimbrels , the Shelduck pair, a male Shoveler , 3 Swift , 20 Swallows , 25 Sand Martins , 3 Lapwings , a pair of Oystercatchers , a Whitethroat and plenty of Reed Warblers . The Green Sandpiper of recent days has not be reported today. A Sedge Warbler was singing on the East side of the Pond. Seen early morning at Sorel were 2 Yellow Wagtails, 4 Whitethroats , 12 Linnets , a male Stonechat , a Dartford Warbler in song and 2 Peregrines hunting together. At Plemont were 6 Razorbills , 3 Swifts , 8 Swallows , a Dartford Warbler , a Swallowtail butterfy and good numbers of Painted Lady butterflies too. At La Rosiere were a singing Whitethroat , 2 Choughs and another Swallowtail plus 20 Painted Ladies . 3 Tufted Duck were at the millpond in St Peter, while at the Jersey Cider Orchard in trinity were a singing Garden Warbler and 2 Bullfinches . Another Garden Warbler was in song along Route d'Ebenezer and Long-tailed Tits were being fed by adults on Rue du Moulin de Bas in Grouville. A Pied Wagtail was seen in New Street, St Helier.
by Michael Dryden 6 May 2026
06.05.2026 The Green Sandpiper at St Ouen's Pond Scrape this morning. MD A mainly cloudy to overcast day, dry but feeling cold in a moderate northeasterly wind. In Grouville Marsh this morning were a Cuckoo , 8 Sedge Warblers , 15 Reed Warblers , 10 Chiffchaffs , one wearing a Spanish ring, and a Grey Heron . The Hoopoe was still near la Route des Augerez and was heard singing at one point, and a Puffin was seen at Plemont. On the Scrape were a Green Sandpiper , 4 Lapwings , the pair of Oystercatcher , a pair of Shelduck , a male Shoveler , 2 Chough , and 2 singing Whitethroats plus good numbers of Reed Warblers , while flying over were a Black-headed Gull , 5 Yellow Wagtails , 50+ Swallows , 25 Sand Martins , 8 Swifts and a Peregrine with prey, probably a pigeon sp. At the Wetland Centre were a (the?) Green Sandpiper and 3 Stonechats . At the Kempt Tower pools were 2 Tufted Duck , 10+ Reed Warblers, 2 Swifts , and a Blackcap . At Noirmont were a Wheatear , 2 singing Whitethroats and 2 Dartford Warblers and a quiet morning at Corbiere saw just 4 Guillemots , a Fulmar , another pair of Shelduck , 16 Gannets , and 4 Cormorants plus 15 Bottle-nosed Dolphins , in one hour. A third pair of Shelduck , a Grey Heron and a Curlew were in Petit Port Bay. Extra reports from yesterday included a Hobby over Mont les Vaux, 3 Curlews at Lady's Rock, the Hoopoe at Route des Augerez, and a Blackcap , a Chiffchaff and a Greenfinch at Jardin d'Olivet. On Portelet Common were a Redstart , a Goldcrest , a Mistle Thrush and 40 Crows near to La Cotte.
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