Cannon-netting - Dawlish Warren, 28th October 2022
High Tide 3.99m @ 09:11, Sunrise 07:59, Team meet time 06:00
Firstly, we wish to extend a special thanks to Stephen, and Phil of Teignbridge Council for allowing us to access the site, helping us set kit and for providing waders to team members who needed them. Thanks also go to Devon Wildlife Trust and the Warren Golf Club for allowing our continued access to the site and our project partners NE, UoE and GWCT for their ongoing support.
Tidal gauge data showing tide making over predictedAfter not being able to make a catch in September, the DCWRG committee were very keen to make a CN catch in October. Although the September attempt was cancelled a big thank you to Lizzie Grayshon (DCWRG CN-licence holder), Ryan Burrell (DCWRG Project Officer) and Tim Frayling (DCWRG Chair) for conducting 3 days of reccees during that high tide series to gain important information for the October catch dates. The main target for October were Oystercatchers to top up our colour-marked sample within the Exe estuary. Each autumn we aim to colour-mark 50 new Oystercatchers in the Exe. The long-term aim of the project being an important survival analysis for Exe oystercatchers, and comparing that to historic estimates, to explore the causes of decline. We started this project in February 2018 and we are generating some fantastic science with our collaborators.
| Species | Ringed | Retraps | Controls | Colour ringed | GPS tagged |
|---|---|---|---|---|---|
| Grey Plover | 3 | 0 | 0 | 3 | 0 |
Cannon-netting - Skern, Sunday 7th November 2021
7th November 2021 – High Tide 6.41m @ 07:03, Sunrise 07:20
A cannon-net attempt on the Taw-Torridge Estuary has been on the fieldwork agenda for DCWRG since shortly after its inception three years ago. As with the Exe, wintering waders in this estuary face increasing pressure from various sources. Hence, Natural England saw it as a priority for our collaborative study to gather data on the use of this estuary and surrounding landscape by Oystercatchers and Curlew. On top of giving us a comparison estuary to the Exe, it expands the DCWRG footprint, brings in a new cohort of contributing ringers, potential colour-mark resighters and raises public awareness about waders in Devon.
| Species | Ringed | Retraps | Controls | Colour ringed | GPS tagged |
|---|---|---|---|---|---|
| Oystercatcher | 1 | 0 | 0 | 1 | 0 |
| Curlew | 19 | 0 | 2 | 19 | 16 |
| Redshank | 33 | 0 | 0 | 0 | 0 |
| Dunlin | 3 | 0 | 0 | 3 | 0 |
Cannon-netting - Dawlish Warren, 7th-8th October 2021
8th October 2021 – High Tide 4.12 @ 08:43, Sunrise – 07:26
After a lot of behind-the-scenes organisation from the team leaders it was decided that we were going to go ahead with the second planned catching attempt for the 2021/22 season.
With a large team assembled we were able to catch 58 Oystercatchers, 28 Dunlin, 4 Grey Plover and 3 Ringed Plover. To further the study of how Oystercatcher are using the Exe Estuary, most were colour-ringed and a further five GPS tags were deployed. All the Dunlin and Grey Plover were also colour-ringed and we look forward to receiving reports of these birds over the forthcoming winter.
| Species | Ringed | Retraps | Controls | Colour ringed | GPS tagged |
|---|---|---|---|---|---|
| Oystercatcher | 52 | 5 | 1 | 50 | 5 |
| Dunlin | 28 | 0 | 0 | 28 | 0 |
| Grey Plover | 4 | 0 | 0 | 4 | 0 |
| Ringed Plover | 3 | 0 | 0 | 0 | 0 |
Project Background
Over recent years the wintering Oystercatcher population has declined significantly in the UK, but this decline has been even greater on the Exe estuary. A number of factors are suspected to be causing this decline, some relate to the estuary, some at larger scales. The colour-ringing project that we are running should help determine what factors are causing the population decline; and to what extent birds from the SPA use the surrounding landscape. The results will help indicate what, if any, actions can undertaken to help reverse declines.
Oystercatchers are faithful to wintering sites so the birds you have seen here years ago may be the same ones now. The oldest Dawlish Warren Oystercatcher on record is at least 36 years old, last seen in Jan 2018.
If you see a bird with one of our colour rings, please use the form on this website to send us the details (ring-code, date, location, species) or you can send email to This email address is being protected from spambots. You need JavaScript enabled to view it..
Cannon netting totals
2018-2019 winter totals
| Species | Ringed | Retraps | Controls | Colour ringed |
|---|---|---|---|---|
| Oystercatcher | 47 | 5 | 1 | 53 |
2019-2020 winter totals
| Species | Ringed | Retraps | Controls | Colour ringed |
|---|---|---|---|---|
| Oystercatcher | 47 | 3 | 0 | 47 |
2021-2022 winter totals
| Species | Ringed | Retraps | Controls | Colour ringed |
|---|---|---|---|---|
| Oystercatcher | 53 | 5 | 1 | 51 |
| Curlew | 19 | 0 | 2 | 19 |
| Redshank | 33 | 0 | 0 | 0 |
| Dunlin | 31 | 0 | 0 | 31 |
| Grey Plover | 4 | 0 | 0 | 4 |
| Ringed Plover | 3 | 0 | 0 | 0 |
2022-2023 winter totals
| Species | Ringed | Retraps | Controls | Colour ringed |
|---|---|---|---|---|
| Grey Plover | 3 | 0 | 0 | 3 |
Grand totals
| Species | Ringed | Retraps | Controls | Colour ringed |
|---|---|---|---|---|
| Grey Plover | 7 | 0 | 0 | 7 |
| Oystercatcher | 330 | 20 | 2 | 301 |
| Curlew | 19 | 0 | 2 | 19 |
| Redshank | 33 | 0 | 0 | 0 |
| Dunlin | 31 | 0 | 0 | 31 |
| Ringed Plover | 3 | 0 | 0 | 0 |