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Stephen Vickers Profile
Stephen Vickers

@Stephen8Vickers

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Ecological Statistician at BioSS . ‘S’ permit bird ringer & RIN member 2022-26.

Edinburgh, Scotland
Joined March 2011
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@Stephen8Vickers
Stephen Vickers
4 years
You can now find links and introductions to all of my #RShiny apps here: . Recommendations for improvements or entirely new apps are welcomed.
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@Stephen8Vickers
Stephen Vickers
6 months
The Whoopers are starting to move and will soon be back on their Icelandic breeding grounds! Since @WaterbirdCM started ringing Whoopers in 2023, we've tagged >600 inds. and gathered >750 sightings. Please keep an eye out and continue to report any sightings to us as they leave!
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@Stephen8Vickers
Stephen Vickers
6 months
RT @KaneBrides: In Feb 23 we undertook a census of the UK naturalised Barnacle Goose population. The aim to produce an updated population e….
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@Stephen8Vickers
Stephen Vickers
7 months
A special thanks to my co-authors and funders. This work was completed as part of my PhD thesis at @biouea/@ueaenv/@uniofeastanglia partnered with @audubonsociety . 10/10.
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@Stephen8Vickers
Stephen Vickers
7 months
We think this is because dispersal into new breeding areas is always passed to the next generation when born there – you only need to return to a known location. Conversely, a new non-breeding site isn’t automatically passed to the next generation. 9/10.
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@Stephen8Vickers
Stephen Vickers
7 months
Flocking was associated with significantly larger non-breeding range COA shift rates, particularly in mixed-age flocks. However, flocking had no significant effect on breeding range COA shifts. 8/10
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@Stephen8Vickers
Stephen Vickers
7 months
The data goes into PGLS models weighted by uncertainty in COA shift rate. One model for each season for a binary flocking var. for 122 species. Another model for each season where we categorise flocks as either age-separated or mixed-age, for 81 species. 7/10
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@Stephen8Vickers
Stephen Vickers
7 months
N.B.: We do still lack published accounts of typical migratory flocking behaviour for many species! This includes whether a species flocks, typical flock size, age composition, species composition, etc. 6/10.
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@Stephen8Vickers
Stephen Vickers
7 months
We collated information on migratory flocking behaviour of North American migratory birds, building upon the Beauchamp et al. 2011 dataset with species accounts from Birds of the World Online and age-cohort timing calculated from USGS banding data. 5/10
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@Stephen8Vickers
Stephen Vickers
7 months
To test this, we used 50-years of North American BBS and CBC #citizenscience data to quantify annual centres of abundance (COA) for breeding and non-breeding ranges across the contiguous USA and southern Canada. We then summarised the magnitude of the shift in COAs. 4/10.
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@Stephen8Vickers
Stephen Vickers
7 months
We hypothesised in sp. that migrate solo, inter-generational change may need change in genetics of mig. distance/direction. However, flocking migrants can benefit from social learning, which might act faster – but inter-gen. learning can only happen in mixed-age flocks!. 3/10
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@Stephen8Vickers
Stephen Vickers
7 months
Species may need to shift their range to respond to environmental change, but for migrants this can be tricky as seasonal ranges that shift at different rates/directions can require a change to migratory distance/direction. 2/10.
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@Stephen8Vickers
Stephen Vickers
7 months
New paper published today in Movement Ecology! We show N. American birds that migrate in flocks have greater long-term non-breeding range shifts, particularly if flocks are mixed-age. We link this to social learning in novel mig. route development. 1/10.
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@Stephen8Vickers
Stephen Vickers
8 months
RT @kirstyyfranklin: New paper! If you use time-lapse cameras, this one's for you!. Proud of this collaboration with @UEA_CMP's Marcus Jenk….
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@Stephen8Vickers
Stephen Vickers
8 months
RT @kirstyyfranklin: Seasonal field staff needed for @RSPBScience projects in 2025 - advert live, closing date 12 Jan. Lots of #seabird (an….
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@Stephen8Vickers
Stephen Vickers
9 months
RT @trhaaland: 📣PhD position open in our group!📣.Come work on a super fascinating system: partial #migration in European shags. #Fieldwork,….
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@Stephen8Vickers
Stephen Vickers
9 months
* picture is from original ringing in 2020, I haven’t recaught it!.
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@Stephen8Vickers
Stephen Vickers
9 months
1450 days and 4 return migrations later and back just 7km from where I originally caught and ringed it!
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@LingwoodMurray
Murray Smith
9 months
Water Pipits continue to show well at Fen Hide @RSPB_Strumpshaw. This ringed bird was ringed by UEA Ringing Group in 2020 at Cantley BF as an adult. This will be a new UK longevity record 🥇. Thanks to @peaceofcakes for the ringing info via the Ringing Group
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@Stephen8Vickers
Stephen Vickers
9 months
RT @KaneBrides: Ok! Come on let's follow this lot to where they're sleeping tonight. A thread🧵 #Ornithology 1/7.
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@Stephen8Vickers
Stephen Vickers
10 months
RT @WaterbirdCM: Since 2023 we've caught & colour-marked nearly 600 Whooper Swans & we need your help to find them! 🧐 Please check any floc….
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@Stephen8Vickers
Stephen Vickers
10 months
The @_BTO Ringing and NRS report 2023 data has now been added to my visualisation apps:. Explore graphs of numbers ringed etc. and NRS records over time:. Explore a map of numbers ringed, etc. by region:.
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