Colour Ringed Birds

As winter moves in roosts of gulls and congregations of geese and ducks will increase.  Some of these birds have been colour ringed in the Water Park and we welcome any sightings you may have of these birds.  Below are details of a couple of these projects

Black-Headed Gulls:

Since 2004 members of the Cotswold Water Park Ringing Group have fitted nestlings with Darvic rings as well as BTO metal rings. Each bird has a unique 4 digit code which can be read through a telescope. The CWP birds have a white Darvic ring with black engraving fitted on the lower leg. All of our birds begin with the number 2 (reading from the foot up) followed by a letter and two numbers.

When reporting sightings please record:-   Date seen, Darvic ring number, Which leg the Darvic Ring was on and the location (pit number or Grid reference).

Canada Geese

Canada Goose (Gareth Harris)

Canada Goose (Gareth Harris)

This project remains ongoing and is part of a research project coordinated by WWT, FERA and Exeter University; the key study aim, using the Canada Geese of the CWP, is to assess how stable a population is, to assess which birds associate together and how and if this changes.

A number of geese have been fitted with orange neck collars bearing a 2-letter code. If you see any of these collared birds, please could you send in these observations to the blog, noting the date and location, plus total flock size, numbers of tagged birds and their collar codes. Please also indicate in which direction the codes were read (upwards or downwards).

Why Ring Birds

We often get queries as to why birds are ringed and in particular whether this remains relevant when improved technology such as satellite tagging is available.

Ian Newton (probably the foremost ornithologist in the country) has written a paper on this subject for British Birds.   The article can be found at,2TMR2,7HL7UK,AGUO1,1

This entry was posted in Uncategorized. Bookmark the permalink.