Importance of CES

Monday, October 17th 2011

Did you ever wonder where presenters on TV programmes like Countryfile and Spring Watch find all those wonderful facts about bird populations and breeding success? Well they get it from the BTO, and where does the BTO get its data from? Well they compile their information from the data supplied to them by a number of voluntary teams scattered around the country similar to the ringing team at Foxglove. 

The team at Foxglove has just completed its 19th consecutive season of Constant Effort Site ringing at Foxglove.  This has meant that on 12 mornings between May and September this year, the team members were up well before dawn in order to arrive at Foxglove to erect the mandatory nets as first light was breaking.  Ringing then commenced for a standard ten and half hours on each session.  Following all this effort, Tony has just completed the inputting of the information gathered and we can now see further information and recent trends emerging about our site and the wild bird population in general. Quoting from Tony's own words:

“the results have been the best ever with 2584 birds going into the data total which is incredible, ........ but basically we had 5 days with over 200 birds caught and 2 with over 300 caught! The poorest day - which is perfectly normal when they are all breeding - was CES 2 with only 106 birds. The next nearest highest year was 2479 birds in 2006, the lowest ever was 1295 in the first year 1993.”

When all this data is collected centrally, the BTO is able to make informed comments about the success (or lack of it) of the breeding season as well as other observations about survival rates and the overall population trends of individual species.  It is also worth pointing out that this information is supplied to Government under the BTO's contract with Joint Nature Conservation Committee (JNCC), to help inform their decision making on conservation issues!

So when you are sitting in your arm chairs watching TV and listening to the facts being spoken with such authority, remember that it is all possible because of the energy and enthusiasm of the volunteers like the ringing team at Foxglove and it is also worth saying that we should be very proud that in Foxglove we have one of the premier sites for data collection across such a wide variety of bird species in the UK.

The photograph shows one of the team members explaining the procedures to members of the public.


(0) Comments:

There are no comments for this blog post yet. Why not start the discussion? - use the form below:

Leave a Comment:

Please complete this field, it's required. Your email address will not be displayed but it's required.

Your email address will not be displayed but it's required.

Remember my personal information

Notify me of follow-up comments?

Back to Top

Help Support Foxglove

Friends of Foxglove

The Friends of Foxglove Covert is for those individuals, families and organisations who would like to support the reserve through an annual membership subscription. Friends receive a regular newsletter and invitations to attend our various activities and social events.

More Details

Upcoming Events

Butterflies and Moths Treasure Trail

Friday 22nd July 2022 | During Reserve Opening Times

Enjoy a walk around the red route (easy access trail) and find the clues to learn all about these wonderful insects. 

Pick up a clue sheet from the Field Centre for only £1 and check your answers at the end.

No booking required as this is a selg guided activity! Please remember to bring a pencil from home.

The clues will be out for the duration of the school summer holidays (North Yorkshire dates).

Pond Dipping 1

Wednesday 27th July 2022 | Various sessions available starting on the hour

Come along and find out which animals are living in some of the Foxglove ponds. Book a pond dipping session for your family bubble of up to six people. There will be a socially distanced brief to set you off and then you can use the equipment for the remainder of the session. You will be requested to use hand gel on arrival and the net handles will be cleaned between sessions.

Please call the Reserve Managers on 07754 270980 to book your allocated slot. You are advised to arrive 15 minutes before your allocated time. 

A donation of only £5 per group in advance will confirm your time slot.


Undergrowth Newsletter

Undergrowth Newsletter Autumn 2021 - Issue 56

The reserve's newsletter for Autumn 2021.

Read this Issue

Undergrowth Newsletter Winter 2020/21 Issue 54

Find out what has been going on at the reserve during the lockdown!

Read this Issue

View All The Newsletters

Recent Blog Posts

Blog Archive