bird ringing training chew valley

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2019 Ringing Course

News from the Ringing Station

July 2018
842 birds of 25 species were ringed, with a further 245 birds of 19 species re-trapped...

Controls & Recoveries

Recent returns from the BTO include a Reed Warbler first ringed in Spain.

Chew Valley Ringing Station

is located in North Somerset just north of the Mendip hills on the southwest shore of Chew Valley Lake and on the A368 road midway between Bath and Weston-super-Mare, between the villages of Bishop Sutton and West Harptree.
Ringing started at Chew Valley Lake in 1963 and the first report was produced by the Mendip Ringing Group covering the years 1962-63. Our ringing area is mainly reed bed with some scrub. Between April and September we normally catch good numbers of Reed Warblers and Sedge Warblers and a varying number of other species such as Blackcap, Chiffchaff and Willow Warbler plus the normal residents which now include Cetti's Warbler. We get a good passage of migrants and there is plenty of chance to see stages of moult. We also attempt to catch hirundines at roost.
If you wish to enquire about membership or have any other query please email us at in the first instance for details.

Bird Ringing Course 2018 - 26th-29th July

CVRS ringing course 2018
This year's ringing course ran over four days 26-29th July 2018. For the first time there were eight participants and the course followed a new format, with four tutors dedicated to supervise two participants each, leading to assessments at the end. Another change was to focus on quality of supervision rather than quantity of birds ringed. Post-course responses reflect that these changes were greatly beneficial to the success of the course. One participant received positive assessment for a training endorsement, two for advancement to 'A' permit and the others all made positive progress towards 'C' permit sooner or later. After the long heatwave the weather chose to close in, with wind and rain on the Saturday – not entirely a bad thing as this provided the opportunity to demonstrate how to monitor the worsening weather and close/furl nets when necessary. Indoor talks on bird handling and the moult cycle were well-received and are now a regular feature of the course.

The preceding weeks of dry weather had reduced the normal abundance of birds in the catching areas. Totals were as follows: ringed 309; retraps 99; total caught/processed 408 of 26 species. The Thursday night hirundine roost catch comprised 63 Swallows and 13 Sand Martins. One adult Swallow had been ringed as a pullus a few miles away at Stowey. Only one Water Rail was caught – this may have been as a result of the plethora of tiny frogs that had just emerged and doubtless distracted adult Water Rails for breakfast, lunch and dinner. Other highlights included a retrapped 10 year-old Reed Warbler and opportunities to fit less-common ring-sizes required for a Canada Goose, three Mallard and a Kingfisher.
2017 ringing course
2019 Ringing Course - Dates TBA
Sat Aug 18 17:46:50
GBB gull with yellow CR code D:AE, ringed Denny Island, Bristol Channel 2013, subsequently Trevose Head 2015, Camel…
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Fri Aug 17 19:30:34
For the third summer in a row, this Norwegian black headed gull at CVL again this evening (J55C). A Scandi hat-tric…
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Tue Aug 14 11:35:12
Sorry, that was 65 reed warbler.
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Sat Aug 11 11:49:52
Big catch today of 119 new birds, 65 sedge, c30 sedge, 2 cetti’s. 37 retraps.
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Sat Aug 11 09:51:27
Finnish BHG ringed in 1996, seen in CVL in 2015 and again yesterday at Herriots bridge. Now at least 22 years old.
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Sat Aug 11 09:41:39
Interesting collection of ringed BHG at CVL yesterday, including a old friends from Essex, Gloucester and Finland.
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Sun Aug 05 14:32:24
To give an idea of what the Reed Warblers are up to, 107 new birds ringed since Thursday - the vast majority juvs i…
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Sun Jul 29 15:41:51
From a quick scan of CVRS data, Reed Warbler start to be recorded as having completed their PJ moult from the end o…
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Sun Jul 29 14:55:20
For those interested in the timing of post-juvenile moult, it was interesting to see on the Ringing Course many juv…
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Sat Jul 28 15:53:04
CVL regular black headed gull colour ring 24H2 back for another year. Originally ringed Gloucestershire as a chick in 2013.
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