wos slogan

North Wilts Group

15th July - Tree Sparrow RAS


My ringing calendar was starting to get a bit jammed up with CES due and also Tree Sparrow RAS catches urgently needed so we decided to split the team to cover both options.
Gary joined me at the Tree Sparrow site which consists of feeders by a pond on the downs. The Tree Sparrows always provide such interesting information, today we ringed 22 and retrapped 22, it seems that despite the more nest boxes we put up, the split of unringed v ringed in our catches stays the same. We caught 36 juvenile Tree Sparrows, again with an exact 50/50 split of ringed v unringed. We caught a total of ten adults for the RAS project, of these, one was originally ringed 5km away last year.
The most interesting Tree Sparrows were four juveniles that we ringed as nestlings at an organic farm 2km away. This is a new site for us and it has opened up our eyes to organic farming because the breeding results have not been very good there and then to have four of the nestlings immediately disperse away tells me that organic farming may not always be beneficial to farmland birds.
Surprise of the day was the Garden Warbler that we caught as it flew through an area of stinging nettles, I don't think that I have ever seen one on the downs before. MP, GH
Tree  Sparrow 22 (22), House Sparrow 16, Greenfinch 2, Chaffinch 2, Goldfinch 3, Blackcap 4, Garden Warbler 1, Whitethroat 1, Chiffchaff 1, Swallow 1, Dunnock 5, Wren 1 (1), Blackbird 5, Great Tit 15, Blue Tit 3, Jackdaw 1

Information about WOS

Wiltshire Ornithological Society was formed on November 30th, 1974, and has grown in recent years to more than 500 members.

Our mission is to encourage and pursue the study, recording and conservation of birds in Wiltshire

Read More



Latest News

09 November 2017
CWP Coordinated Gull Roost Count The last coordinated count of gull roosts in the CWP was undertaken in winter 2005/06. In conjunction with the BTO Winter Gull Roost Count in 2003/2004 and a series o...
20 July 2017
A new Atlas section has been added to the web site. This shows distribution and abundance maps for most of the birds that can be found in Wiltshire. To access the Atlas, select Atlas from the menu i...

Home  | Contact WOS
Copyright © 2017 Wiltshire Ornithological Society. Registered Charity no 271033. Site by Mindvision