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Cyhoeddiadau y BTO
Recent BTO Wales publications
![Red Kite, by John Harding / BTO Red Kite, by John Harding / BTO](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/red-kite-2020-b040-john-harding-7906.jpg?itok=bZCEUDI0)
Modelling population-level impacts of wind farm collision risk on Welsh Red Kites
Red Kites and onshore wind in Wales
The Welsh Red Kite population is currently in ongoing recovery after a historic decline driven by persecution, and a consequent population bottleneck during the first half of the 20th century.
![Swallow. Edmund Fellowes / BTO Swallow.](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/swallow-edmund-fellowes-bto.jpg?itok=Ekz5Sh5F)
BirdTrends 2022
BirdTrends 2022
The BirdTrends 2022 report is a one-stop shop for authoritative information about the population status of the common breeding birds of the wider UK countryside.
![Rook, by Edmund Fellowes / BTO Rook, by Edmund Fellowes / BTO](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/bto-2019-b11-edmund-fellowes-1895_2.jpg?itok=0aqNafQg)
Birds of Conservation Concern Wales 4: the population status of birds in Wales
What does the latest Birds of Conservation Concern review mean for Welsh birds?
![Curlew. Liz Cutting Curlew. Liz Cutting](https://www.bto.org/sites/default/files/styles/publication_listing/public/slides/curlew-2019-b35-liz-cutting-3904_original.jpg?itok=rLJbNwp0)
Assessing drivers of winter abundance change in Eurasian Curlews Numenius arquata in England and Wales
![Sheep. Mike Toms Sheep. Mike Toms](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/2020-b023-mike-toms-6798_original.jpg?itok=6da2mblY)
Rapid adaptive modelling for policy support towards achieving Sustainable Development Goals: Brexit and the livestock sector in Wales
![Oystercatcher feeding along the shoreline Oystercatcher feeding along the shoreline](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/oystercatcher2019-b45-liz-cutting-5040_5_original_0.jpg?itok=UvmiS2dQ)
Wader populations on the UK’s open coast: results of the 2015/16 Non-Estuarine Waterbird Survey (NEWS-III) and a review of population trends
Wader population trends on the UK's open coast
Newly published research from BTO underlines the importance of the UK’s rocky shores and sandy beaches for waterbird species.
![Meadow Pipit. Graham Clarke Meadow Pipit. Graham Clarke](https://www.bto.org/sites/default/files/styles/publication_listing/public/meadow-pipit-2019-b33-graham-clarke-3450_original.jpg?itok=jVPWIOfc)
BirdTrends 2020
BirdTrends 2020
The BirdTrends 2020 report is a one-stop shop for authoritative information about the population status of the common breeding birds of the wider UK countryside.
![Peregrine. Philip Croft Peregrine. Philip Croft](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/peregrine2020-b005-philip-croft-5611_original.jpg?itok=4Rr6T5oy)
Contrasting long‐term trends in age‐specific survival of Peregrine Falcons (Falco peregrinus) in Britain using smoothed estimates of recovery probabilities
Living fast: using ringing data to look at survival of British Peregrines
![BTO volunteers. David Tipling BTO volunteers. David Tipling](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/volunteer-2019-b14-david-tipling-2227_2_original.jpg?itok=BcO8gt5r)
The State of the UK's Birds 2020
Providing an annual overview of the status of the UK’s breeding and non-breeding bird species in the UK, this year’s report highlights the continuing poor fortunes of the UK’s woodland birds, and the huge efforts of BTO volunteers collecting data.
![RR727_cover.jpg RR727_cover.jpg](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/rr727_cover.jpg?itok=uFAmYfE3)
Audit of local studies of breeding Curlew and other waders in Britain and Ireland
The Eurasian Curlew is widely considered to be one of the highest bird conservation priorities in the UK and Ireland. A number of other breeding waders have also showed marked declines during a similar time frame, and a multitude of field initiatives across Britain and Ireland have been established, or tailored, to support conservation of these wader species. This audit aimed to collate information from as many of these breeding wader projects as possible, to allow BTO to assess how best it might assist local to national initiatives through partnership working in future.
![Pheasant. Jill Pakenham. Pheasant. Jill Pakenham.](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/pheas_022e_male_in_bluebells_jill_pakenham_a_0.jpg?itok=8qX-y3io)
Associations between gamebird releases and general predators
Pheasants and Red-legged Partridges for commercial shoots may be boosting numbers of the avian predators and scavengers.
![State of Birds in Wales 2018 cover State of Birds in Wales 2018 cover](https://www.bto.org/sites/default/files/styles/publication_listing/public/publication-group/state-of-birds-wales-2018-cover.jpg?itok=bZ4Xiqxu)
State of Birds in Wales 2018
The State of Birds in Wales 2018 was published on 6 December 2018.
![Kittiwake. Edmund Fellowes Kittiwake. Edmund Fellowes](https://www.bto.org/sites/default/files/styles/publication_listing/public/kittiwake-bto-2019-b11-edmund-fellowes-1813_2_original.jpg?itok=v6O7LJbU)
When is enough enough? Effective sampling protocols for estimating the survival rates of seabirds with mark-recapture techniques
![Peregrine by Nathan Guttridge Peregrine by Nathan Guttridge](https://www.bto.org/sites/default/files/styles/publication_listing/public/008800-peregrine-falcon-nathan-guttridge.jpg?itok=TkRoudIW)
The breeding population of Peregrine Falcon Falco peregrinus in the United Kingdom, Isle of Man and Channel Islands in 2014
Breeding Peregrines on the up thanks to growth of lowland populations
The return of breeding Peregrines to former haunts, and the colonisation of urban sites such as industrial buildings and cathedrals, has not gone unnoticed by birdwatchers. It is only now, however, with the publication of the results from the latest national Peregrine survey, that we can put figures on the changing fortunes of this stunning bird of prey.
The importance of the United Kingdom for wintering gulls: population estimates and conservation requirements
![Common Toad. Moss Taylor Common Toad. Moss Taylor](https://www.bto.org/sites/default/files/styles/publication_listing/public/publications-individual/006993-common-toad-moss-taylor.jpg?itok=VyPNv2N9)
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