Andrew Harrop
@ahjharrop.bsky.social
📤 581
📥 361
📝 104
For sound recordings go to
https://xeno-canto.org/contributor/HNYFHZLJOD
reposted by
Andrew Harrop
Brian Small
3 days ago
Finding a confiding first-winter Twite on Reydon Marshes yesterday, just 2 km from home, was pleasing and at an area where large numbers used to winter in Suffolk - I have old video of a flock of over 80. Nowadays, birders twitch them in Suffolk...
#ukbirding
#suffolkbirding
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Some nice sounds from displaying Goosanders in calm conditions at Water of Leith, Edinburgh this morning (quieter male followed by louder female):
xeno-canto.org/1069432
#BirdingScotland
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XC1069432 Common Merganser (Mergus merganser)
Calls from displaying birds on river, male followed by female; Magpie in background.
https://xeno-canto.org/1069432
7 days ago
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Probably my favourite ‘Times’ cartoon of the year.
10 days ago
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reposted by
Andrew Harrop
Xeno-canto
15 days ago
Check out this write-up on sound producing Grasshoppers in Europe, and their availability on XC
www.researchgate.net/publication/...
.
#bioacoustics
#grasshoppers
#orthoptera
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(PDF) A list of sound producing European grasshoppers and the availability of their sounds in Xeno-canto
PDF | On Dec 8, 2025, Baudewijn Odé and others published A list of sound producing European grasshoppers and the availability of their sounds in Xeno-canto | Find, read and cite all the research you n...
https://www.researchgate.net/publication/398459063_A_list_of_sound_producing_European_grasshoppers_and_the_availability_of_their_sounds_in_Xeno-canto
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reposted by
Andrew Harrop
Martin Collinson
18 days ago
Ooh, poop sample from the grackle from Calshot, Hampshire, Nov 25, shows it was Great-tailed, not Boat-tailed as thought. Analysis by
@tessaroo.bsky.social
poop by
@wjrpb.bsky.social
@birdguides.bsky.social
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https://Analysis.by
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Ferruginous x Pochard in the rain at Welney yesterday. Note how this hybrid retains Ferruginous traits of white in secondaries and even white spot on chin.
#BirdHybrid
#UKBirding
20 days ago
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Confused by crossbills? The ‘most strongly supported splits’ from Benkman’s extraordinary ‘Crossbills & Conifers’ (2025) which merits close reading and gives due acknowledgement to Nethersole and Alan Knox.
#BirdingScotland
#UKBirding
23 days ago
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The Snowy Owl has been declared Regionally Extinct in Sweden. For the first time in 20 years, the country has officially lost a bird species. -
www.birdlife.org/news/2025/12...
#BirdingScotland
#UKBirding
Attributed to a combination of climate change and disruption to the lemming cycle. A tragedy.
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Sweden has lost the Snowy Owl
The Snowy Owl has been declared Regionally Extinct in Sweden. For the first time in 20 years, the country has officially lost a bird species.
https://www.birdlife.org/news/2025/12/11/sweden-has-lost-the-snowy-owl/
24 days ago
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reposted by
Andrew Harrop
Alan Knox
28 days ago
Picked up an unwelcome passenger today. A
#tick
while outdoors in the suburbs. Even in December. There doesn't seem to be any 'safe' time of the year any more. With so much more
#LymeDisease
around, a constant need for vigilance.
@scottishbirding.bsky.social
@btoscotland.bsky.social
#birdingscotland
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In March 1991 I discovered this Parrot Crossbill at Wakerley Woods following a major influx (photo Keith Stone). Regular visits in recent years have recorded Crossbills of four call types (mainly N4, N6) but no more Parrots.
#UKBirding
about 1 month ago
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reposted by
Andrew Harrop
Xeno-canto
about 1 month ago
... & while you're at perhaps also support the platform & community sharing the sounds used to kickstart and train most of all that passive monitoring wizardry. Which platform? You guessed it:
xeno-canto.org/donate
add a skeleton here at some point
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reposted by
Andrew Harrop
Simon Gillings
about 2 months ago
Today I collected an audio recorder I left in the Fens with the aim of getting some nice Wigeon recordings. Incredibly it also picked up this Richard's Pipit flying through on the morning of 6th November!
xeno-canto.org/1053297
#UKBirding
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XC1053297 Richard's Pipit (Anthus richardi)
12 flight calls
https://xeno-canto.org/1053297
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Where are they now? More than 10 years on from the initial revelation, it still blows my mind that Shetland’s phalaropes winter in the Pacific (map from Brooke’s ‘Far From Land’). Yet they are short-distance migrants compared with Arctic Terns…
#BirdingScotland
2 months ago
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reposted by
Andrew Harrop
BTO Scotland
2 months ago
🚨Hot off the press!🚨A very interesting thread here, and follow the link to the summary of the report. Top work from
@ukrbbp.bsky.social
add a skeleton here at some point
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reposted by
Andrew Harrop
Richard K Broughton
2 months ago
Interesting(!) that these captive-bred ducks for sale in East Yorkshire seem to be unringed in very many cases. Baikal, Blue-winged, Green-winged Teals, plus Garganeys. Dread to think how many end up in the wild and in local bird reports...
#ukbirding
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www.dutchbirding.nl/dbactueel/20...
Well worth a read and listen if you haven't already.
#UKBirding
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Semipalmated Plover at Salinas de Brito, Portugal, in September 2024 and song identification in the Western Palearctic - Dutch Birding
https://www.dutchbirding.nl/dbactueel/2055/semipalmated_plover_at_salinas_de_brito_portugal_in_september_2024_and_song_identification_in_the_western_palearctic
2 months ago
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reposted by
Andrew Harrop
BOU
3 months ago
Over 30 years decline of an iconic farmland bird, Red-backed Shrike Lanius collurio, in a Central European stronghold: meadow loss and shrub succession drive near-local extinction |
doi.org/10.1017/S095...
| Bird Conservation International |
#ornithology
🪶
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reposted by
Andrew Harrop
Paul French
3 months ago
Short news piece on the Challenger expedition and the Band-rumped fiesta:
britishbirds.co.uk/news/band-ru...
#RareBirdsUK
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Band-rumped Storm-petrels in UK waters | British Birds
The taxonomy and identification of the Band-rumped Storm-petrel Hydrobates castro/monteiroi/jabejabe complex is very, well, complex, as are their previous occurrences in Britain.
https://britishbirds.co.uk/news/band-rumped-storm-petrels-uk-waters
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reposted by
Andrew Harrop
Anthony Ricciardi
3 months ago
6/ Although some native species can also become superabundant & damaging (but only when triggered by disturbance), non-native species are far more likely to be implicated as a cause of global extinction:
t.co/9NUoV81a54
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reposted by
Andrew Harrop
German Ornithological Society
3 months ago
Now online in Journal of
#Ornithology
Three decades of breeding bird population changes in a pristine Danish forest: climate-driven shifts and biodiversity loss compared to national trends Open access
link.springer.com/article/10.1...
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Three decades of breeding bird population changes in a pristine Danish forest: climate-driven shifts and biodiversity loss compared to national trends - Journal of Ornithology
Climatic changes are causing general ecosystem changes and species-specific range shifts. To increase our understanding of climate change effects on avian trends and range shifts, this study investigates long-term breeding bird population trends in the pristine Høstemark Forest, Denmark, from 1991 to 2024, in the context of climate change and biodiversity loss. Using territory mapping data from unmanaged pristine forest and national point count data, we examined whether climate-group classifications (leading-edge, neutral, trailing-edge) predict population trends and how a high-quality habitat buffers against climate-driven shifts. Results show significant declines in total bird territories since 1991, while forest-specific bird species abundance remained stable in the Høstemark Forest. Trailing-edge species declined both locally and nationally, while leading-edge species increased locally but not significantly at the national level. Climate-neutral species exhibited local declines despite stable national trends. Species turnover rate appeared to occur more rapidly in the Høstemark Forest compared to the national scale, with both losses of trailing-edge species and gains in leading-edge species. However, despite its ecological quality and stability, the Høstemark Forest experienced a decline in overall bird abundance, suggesting that even pristine habitats can be vulnerable to biodiversity loss, potentially driven by climate change, isolation, and edge effects.
https://link.springer.com/article/10.1007/s10336-025-02328-7
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It occurred to me that I couldn't think of (m)any photos of Short-toed Larks with other species in the frame for size comparison. So here's one of the recent Yell bird (right) with a Meadow Pipit.
#BirdingScotland
3 months ago
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reposted by
Andrew Harrop
Alexander Lees
3 months ago
I had missed this well written rebuttal on the purported Ivory-billed Woodpecker rediscoveries; these passages in particular are gold:🪶
academic.oup.com/bioscience/a...
#Ornithology
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reposted by
Andrew Harrop
Per Alström
3 months ago
Just published: Conservation genomics of two endangered buntings reveal genetic diversity before and after severe population declines.
doi.org/10.1186/s129...
Despite severe population declines, both species retained high genetic diversity but experienced increased inbreeding.
#ornithology
#birds
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Late September has brought the usual heady mix of brief rarities, misidentifications, and some scarce migrants. Numbers of many 'common' migrants have been low, the only real exceptions to date being Sky Lark and Meadow Pipit.
#BirdingScotland
3 months ago
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reposted by
Andrew Harrop
WildBirdAcoustics.bsky.social
4 months ago
open.spotify.com/episode/1dlD...
Uncovering the migration patterns of Tengmalm’s Owl in Northern Sweden. Wild Bird Acoustics brings you the penultimate episode of season 2. Now Live!
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The Long Black Veil; Uncovering the Secret World of Tengmalm's Owl
https://open.spotify.com/episode/1dlDQuynJuTAlXvAO3nEVF?si=QH-bK16_Q2WMyQGFBeqvYQ
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reposted by
Andrew Harrop
Alan Knox
4 months ago
Gosh. That Nathusius' Pipistrelle
#bat
spike just got a heck of a lot spikier! Not seen anything like this in several years of recording.
@nesmammals.bsky.social
@batconservation.bsky.social
@mammalsociety.bsky.social
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The last two days have brought a surge of migrants through south Mainland, Shetland. Personal highlights have included 124 Ruffs at Spiggie (the largest number I’ve seen for years), and a healthy scattering of Wrynecks like this one at Quendale.
#BirdingScotland
4 months ago
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reposted by
Andrew Harrop
Portland Bird Observatory
4 months ago
www.portlandbirdobs.com/2025/09/6th-september.html
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6th September
There used to be such certainties in life: England were always contenders for a World Cup, you'd marvel at the oratory of the titans of Labo...
https://www.portlandbirdobs.com/2025/09/6th-september.html
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reposted by
Andrew Harrop
Dylan Daunt
4 months ago
Nice to see this white morph Gyr Falcon on North Ronaldsay today. But it seemed to be bearing a ring on its leg. Still nice to see and hopefully a wild one will turn up one day…
#BirdingScotland
#OrkneyBirding
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reposted by
Andrew Harrop
Wilson Ornithological Society
4 months ago
A sweeping new analysis of birdsong recordings from around the globe shows that light pollution is causing birds worldwide to start singing earlier and keep singing later.
#ornithology
www.npr.org/2025/08/21/n...
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Artificial light has essentially lengthened birds' day
Millions of audio recordings of hundreds of bird species have revealed that artificial light is making the birds wake up earlier and go to bed later.
https://www.npr.org/2025/08/21/nx-s1-5507165/light-pollution-bird-day-hour-longer
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A nice comparison between Black-throated (left) and Red-throated Divers at Quendale this morning. Black-throated has been regular in August at this site in recent years.
#BirdingScotland
5 months ago
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reposted by
Andrew Harrop
Angus Croudace
5 months ago
Living the dream working on the Cairngorm Plateau as part of the 2025 Montane Bird Survey. It was also very saddening - walking for days over swathes of beautiful habitat to find no Dotterel where there were once many...
#BirdingScotland
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July has mainly been about waders, but by far my most important discovery has been a breeding pair of Red-backed Shrikes in south Mainland (Shetland) which have now fledged young. You can listen to a recording here:
xeno-canto.org/1019697
and others will follow in due course.
5 months ago
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This white Starling which has been around Spiggie recently appears to be a true albino (most ‘white’ birds are leucistic). Albinos have poor eyesight, so it will be interesting to see how long it survives.
#BirdingScotland
#ornithology
6 months ago
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reposted by
Andrew Harrop
WildBirdAcoustics.bsky.social
6 months ago
open.spotify.com/episode/4hMi...
Wild Bird Acoustics Season 2; Ep. 15 Now Live! Another identification feature here, Buntings by sound, for anyone interested in diurnal migration. Delighted to finally release this, complimented by some wonderful Spring audio for listeners….
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The Fruits of 2024; The Sound Identification of migrating Buntings
Wild Bird Acoustics · Episode
https://open.spotify.com/episode/4hMiWbM5FnrjZDHWNkkFAQ?si=GUd3SBsvQRmbK8F0ySgPYg
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The beginning and the end for two Arctic Terns at Scatness yesterday evening. The adult may have become prey for a Peregrine; if so it was unlucky, given how few Peregrines are in Shetland.
#BirdingScotland
6 months ago
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reposted by
Andrew Harrop
Stu Butchart
6 months ago
A paper describing the history of AviList and how the new unified global bird checklist was created has now been published - free to download until 1 September:
rdcu.be/euZjH
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AviList: a unified global bird checklist
https://rdcu.be/euZjH
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reposted by
Andrew Harrop
Marta Maziarz
6 months ago
Another difficult spring for wood warblers in Białowieża Forest🇵🇱 Few birds settled after autumn oak masting, and ca. 80% of them failed to raise young due to nest predation. Frequent tree masting seems to be driving the species decline
esajournals.onlinelibrary.wiley.com/doi/full/10....
#ornithology
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June: breeding bird surveys, which means mapping the impact of man and a paradoxical feeling of powerlessness. Also a few rare birds, though this one probably came by boat.
#BirdingScotland
6 months ago
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reposted by
Andrew Harrop
Steve Dudley
7 months ago
The Orkney Bird Report 2024 is out! 144 pages inc accounts for all species recorded in 2024, Ringing report,
@northronbirdobs.bsky.social
report, Meteorological report and finders accounts of county 1st Black-faced Bunting and 2nd American Robin. Price £12. DM me for sales info.
#OrkneyBirding
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Common Snipe plumage is variable, and some Shetland birds like this one on Out Skerries yesterday are quite heavily barred on the underparts. I’d be interested in how frequent similar birds are in Orkney and north mainland Scotland.
#BirdingScotland
7 months ago
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Oblivious to the taxonomic agonising of Homo sapiens, these Shetland Hooded Crows are getting on with living. Ground nesting is regular here, especially in heather.
#BirdingScotland
7 months ago
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reposted by
Andrew Harrop
Birds of the World | The Cornell Lab
7 months ago
A monumental taxonomy unification effort has just been published - thanks to all those who've collaborated for years to make this happen!
birdsoftheworld.org/bow/news/avi...
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Birds of the World - AviList: A Unified Global Checklist of the World’s Birds is Now Available
AviList, a unified global checklist of birds, that provides the most current and authoritative taxonomy of birds around the world was released today by experts in taxonomy, nomenclature, and bioinform...
https://birdsoftheworld.org/bow/news/avilist-a-unified-global-checklist-of-the-worlds-birds-is-now-available
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I have doubts about some interpretations of Crossbill call types, but they offer a useful avenue of study. The current influx into Shetland (e.g. 25 at Kergord) have been giving N6 type calls which I last recorded here in June 2021.
#BirdingScotland
7 months ago
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Despite the excitement elsewhere in Shetland, my walk round Clevigarth and back yesterday revealed nothing more unusual than Quail. A pair of Fulmars in a ruined croft allowed me to admire the curiously opaque quality of their egg.
#BirdingScotland
7 months ago
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A visit to Poland as respite from cataloguing decline resulted in mixed feelings. Bialowieza, though dry, was wonderful and packed with birds. Biebrza is badly affected by drought, making some species difficult to find. We did enjoy two sightings of Wolf, as well as Elk and Bison.
8 months ago
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reposted by
Andrew Harrop
Paul Dufour
8 months ago
We analyzed feather hydrogen isotopes (δ²Hf) from 72 Nearctic vagrants captured in the Azores, Iceland, and France. Result? Some birds did come from the NE but others from NW and S populations too! (e.g., American Redstart, Gray-cheeked Thrush, Yellow-billed Cuckoo) 2/3
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reposted by
Andrew Harrop
Portland Bird Observatory
9 months ago
www.portlandbirdobs.com/2025/04/25th-april.html
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25th April
Call yourself a Bird Observatory? - just at the moment we're verging on incurring the scrutiny of Trading Standards for purporting to be som...
https://www.portlandbirdobs.com/2025/04/25th-april.html
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This Scaup x Tufted at Spiggie recently, apparently paired with a female Scaup, is presumably of Icelandic origin. Although F1 hybrids are relatively distinctive, any offspring may be more problematical.
#BirdingScotland
#BirdHybrid
9 months ago
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reposted by
Andrew Harrop
Low-Carbon Birding
9 months ago
Costa Rica is often cited as living evidence of the benefits of tourism for biodiversity conservation. Yet the relationship between conservation & 'ecotourism' in the country is more complicated than the popular narrative suggests.
#LowCarbonBirding
#archive
lowcarbonbirding.net/2021/02/26/c...
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Costa Rica: Lessons from the ecotourism laboratory
By Robert Fletcher, Wageningen University Costa Rica has long been considered something of an “ecolaboratory” wherein cutting-edge conservation strategies are tested and refined for emulation elsew…
https://lowcarbonbirding.net/2021/02/26/costa-rica-lessons-ecotourism-laboratory/
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