Herts Bird Club has a wide ranging programme of birding activities, check out what is on offer below and get involved. Everyone can take part.
Birds in Greenspaces
This national survey is planned. Survey website

This is a new project which commences this year – on April 1st, continuing until the end of June.
Birds in Greenspaces is a UK-wide citizen science survey of birds that use our public-access greenspaces. These spaces play many important roles for both birds and people, particularly in urban areas. For birds they offer resources and shelter that cannot be found in the surrounding built-up environment, and for people, are important hubs for socialising, exercise, and cultural activities. For many they are also the only accessible place to connect with the natural world, something which can be very beneficial for mental health.
Public access greenspaces include places like parks, cemeteries, and playing fields, to name a few, meaning a wide range of different habitat on offer. The way in which habitat is managed also varies, determining which birds (and how many of them) make use of these sites. If we can find out the importance of different greenspaces for birds, and people, we can use the findings to inform management guidance, so that decisions are made that benefit both.
The Herts Bird Club is supporting this survey and both the HBC and Herts BTO would like to see as many people as possible get involved and contribute data to the survey. It’s a very easy and simple survey to do and it’s hoped that experienced birders, as well as members of the public and less experienced birders, will pick a local greenspace in their neighbourhood to complete a visit or two (or more!). As well as improving our knowledge of how important these areas are for birds (urban greenspaces are generally poorly recorded) the survey represents a great opportunity to promote and recruit interest in counting birds. It also provides an opportunity for experienced birders to encourage and help other people they may meet who are also taking part, perhaps leading to new members of the bird club and/or the BTO – and maybe future BBS participants!
There are no limits to how many people can cover a given greenspace, how often visits are made, when the visits are made (as long as between April 1st and June 30th) or what time of day the surveys are done – although preferably in the morning when birds are more active.
Taking part
Anyone can take part in Birds in Greenspaces! From April to June, we will be asking you to record the birds in your local greenspace(s). By simply recording which greenspace you visited, how long you spent there, which birds you saw and how many, you will be contributing key data. Whatever your experience level, we will be offering a range of resources to help you to take part and build your skills.
We will be offering recording options that are accessible to everyone, with thousands of survey sites in cities, towns and villages across the UK. We want this project to engage all groups and organisations, not just those with a background in natural history. So, if you’re a member of or involved with a group, club or community that uses a particular greenspace that you know or visit, please pass on details of this survey and encourage their participation.
The project will begin in April 2026.
Please see our Taking part page for information about our greenspaces map and instructions on how to suggest or amend a green space.
Consider signing up for the monthly newsletter via the following link to stay up to date with how the survey is progressing
https://forms.gle/UZWUcWKSnwZmxYTV6
Time/ skill needed
A UK-wide survey for new and experienced birdwatchers alike
Winter Bird Survey WINBS
This national survey is ongoing.
This is a UK-wide survey organised by the BTO for the winter of 2025/26. The time period for the first visit finished at the end of October but data from the later visits are still welcome. Ideally there are three further visits, one each in December, January and February with at least four weeks between visits. The surveys are based on the randomly selected Breeding Bird Survey squares. Surveyors should be able to identify by sight and sound the species that might be expected within the county in the winter. If you would like to contribute please contact Martin Ketcher martinketcher@gmail.com or the BTO at https://www.bto.org/get-involved/volunteer/projects/winter-bird-survey.
Wetlands Bird Survey (WeBS)
This national survey is ongoing. Survey website

If you are interested in wildfowl, this one is for you. Organised nationally by the BTO, in conjunction with the RSPB and JNCC, Herts birders have been participating for many years building up a clear picture of population changes over time. Wildfowl are counted at the major wetland sites once a month throughout the year.
Hertfordshire WeBS results are now published in full on our website, for the years 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010 & 2009. Results for previous years were published in the Herts Bird Report each year.
Check the WeBS website for more information. We are looking for more volunteers to help with the surveys, so please contact Cath Patrick for Lee Valley sites or Martin Ketcher martinketcher@gmail.com for sites excluding the Lee Valley.
Garden BirdWatch
This national survey is ongoing. Survey website

Keep a note of the birds seen in your garden. Garden BirdWatch organised by the British Trust for Ornithology monitors the changing fortunes of birds and other garden wildlife through its network of 'citizen scientists'. Observations collected by Garden BirdWatchers are analysed by BTO researchers and published in leading journals. BTO Garden BirdWatchers have charted the decline of the House Sparrow, the rise of the Woodpigeon, have discovered that urban birds get up later than their rural counterparts and have alerted conservationists to the impact of an emerging disease in Greenfinches. You can take part - find out more about the project here.
Breeding Bird Survey (BBS) and Waterways Breeding Bird Survey (WBBS)
This national survey is ongoing. Survey website
The BBS (together with the WBBS) is the main source of population trend information about the UK's widespread breeding birds an important indicator of the health of the countryside. The survey is organised nationally by the BTO in conjunction with RSPB and JNCC. Hertfordshire is well represented with around 90 volunteers participating in either the BBS or the WBBS or both. Nearly 100 BBS squares and seven WBBS plots were surveyed in 2025. The list of vacant plots for the BBS/WBBS is shown below. The Hertfordshire results are published every year in the Hertfordshire Bird Report.
We would like more volunteers - taking part is easy just visit a local square twice during the breeding season, and record all birds you see or hear using standard methods. If you would like to find out more or take on a BBS square check the BBS website or contact Martin Ketcher. Training in BBS methodology will be available if needed.
Because of the high level of coverage in Hertfordshire, we are already able to monitor 30 species locally. With your support to increase the coverage, we could do more.
|
|
2026 BBS vacant squares |
| TL0312 | NE of Great Gaddesden |
|
TL0317 |
Kensworth |
|
TL0511 |
E of Great Gaddesden (access?) |
|
TL0515 |
Cheverells Green |
|
TL0704 |
Nash Mills |
|
TL1004 |
NE of Bedmond |
|
T2111 |
S of Lemsford (NO ACCESS) |
|
TL2404 |
Brookmans Park (access?) |
|
TL3001 |
Cuffley |
|
TL3107 |
Stapleford |
|
TL3316 |
Chapmore End |
|
TL3103 |
Goff's Oak |
|
TL3330 |
Throcking (access?) |
|
TL3424 |
Great Munden |
|
TL3505 |
Wormleybury |
|
TL3525 |
N of Nasty |
|
TL3600 |
Waltham Cross |
|
TL3610 |
Hailey |
| TL3828 | S of Hare Street |
| TL3900 | Waltham Abbey |
| TL4210 | E of Roydon |
| TL4410 | Harlow |
| TL4914 | Lower Sheering |
| TQ0892 | E Moor Park |
| TQ0992 | Eastbury |
|
|
2026 WBBS vacant 'squares' |
|
TL2212 |
Welwyn Garden City |
Heronries Census
This national survey is ongoing.
The BTO's Heronries Census has gathered nest counts annually since 1928 at an increasing proportion of the UK's heronries. The aim is to count as many heronries as possible each year and to ensure that newly established sites are quickly discovered and brought into the programme of annual counts.
The main species covered is Grey Heron, but Little Egret is fully included, as are rarer species of colonial water birds such as Cattle Egrets (which nested in the UK for the first time in 2008). Nest counts of Cormorants are also collected, especially where they are nesting alongside herons. Data are shared with county recorders and for rare species with the Rare Breeding Birds Panel.
In the Herts BTO region (which includes the Essex side of the Lea Valley), the known heronries are: -
Amwell NR, Great Hardmead Lake
Nether Hall GPs
Holyfield Lake, Lea Valley CP
Cheshunt GP, Bowyers Water
Waltham Abbey Woods, Perme North
Brocket Park, Lemsford
Stanborough Lakes, Welwyn Garden City
Verulamium Park, St Albans
Stockers Lake, Rickmansworth
Marsworth & Tringford Reservoirs, Tring
Wilstone Reservoir, Tring
Frogmore Lakes nr Radlett
Tyttenhanger GPs
Aldenham CP, Elstree
Additionally, former/existing sites at Luton Hoo Park (Beds) and Bourne End (Berkhamsted) are on the Herts BTO region list of sites but have no recent data. I would be grateful if someone would like to check these locations for the presence of breeding Herons, and potentially take on counting any active colony if present.
If anyone is aware of Grey Herons, Little Egrets or Cormorants breeding at a site not listed above, or would like to get involved with the Heronries Census, please contact Murray Orchard at murray.orchard@live.co.uk
Nest Record Scheme
This national survey is ongoing. Survey website

The Nest Record Scheme is one of the longest running monitoring programmes of the BTO. Hertfordshire birders take part and we want to encourage more of you to submit nest records. First started in 1939, the scheme has collected well over 1.25 million records during its 70 years of existence. Although often receiving a lower profile than other national monitoring schemes, nest record data have been vital in diagnosing the causes of declines of some species and it was nest record data that were first used to demonstrate the shift to earlier nesting by many species linked to the recent warm springs. Nest recording is one of the simplest BTO projects to take part in, so it is accessible to everyone. It provides an ideal opportunity for you to participate in the conservation of Britain's birds. So, whether you can monitor a single garden nestbox or are carrying out a larger study, please submit your records to BTO. The 2008 Hertfordshire Bird Report has the latest summary of nest records in Herts.
BTO National Woodcock Survey
This national survey is ongoing.

The 2023 survey continues on some selected squares. For Hertfordshire there are two available priority squares, TL3223 east of Bennington and TL3509 west of Hoddesdon. If you are interested in these squares and to see what other lower squares are available in Hertfordshire, please visit the BTO website www.bto.org/woodcock and register with the BTO.
Bird Ringing
This national survey is ongoing. Survey website

Nationally the ringing scheme is overseen by the BTO. There are three active ringing groups operating in Hertfordshire:
In 2015 over 19000 birds were ringed in the county. Details are published yearly in the Hertfordshire Bird Report. If you would like to take part or train as a ringer, please contact the BTO.
Hertfordshire Mute Swan Breeding Survey 2022
This local survey is complete.

The 2022 Mute Swan Breeding Survey has now finished, with records of breeding activity received from 44 sites - these can be found on the interactive map here which also includes locations of 5 further sites just outside the county boundary. This count is down compared with the previous survey in 2002 which produced 62 breeding pairs.
A number of the nesting sites do not have a known outcome - if you are aware of cygnets hatching and how many survived, or indeed of any nests not on the map, please contact Graham Knight with details here
Colour-ring sightings: Many Mute Swans in Hertfordshire are colour-ringed, and we continue to welcome any details of ring numbers with your observations. Whether breeding or not, colour-ring sightings should also be sent to Mike Reed, who will also provide a full history of the bird on request – contact details here
Injured or distressed Mute Swans: any birds that are injured or in any sort of distress should be reported to Swan Rescue Hertfordshire – contact details here
Hertfordshire Rookeries 2021
This local survey is complete.
Rookeries have been surveyed in Hertfordshire for many years. In 2021 the Bird Club received records of 5,531 nests from 277 rookeries. See how this compares to previous Herts Rookery surveys below.
A new interactive map was produced to show the sites and nest counts, as well as known sites not checked, and sites previously used but found to be abandoned.
| Year of Survey | Total Number of nest counted | Total Number of rookeries counted | Mean Rookery size (number of nests) |
| 1960-61 | 15,739 | 521 | 30 |
| 1971 | 10,708 | 402 | 27 |
| 1975 | 8,685 | 375 | 23 |
| 1993 | 5,435 | 220 | 25 |
| 2015 | 3,343* | 192 | 17 |
| 2021 | 5,531 | 277 | 20 |
*survey coverage not complete
A full write-up of the survey can be found in the Hertfordshire Bird Report 2021
National Turtle Dove Survey 2021
This national survey is complete.

Breeding Waders of Wet Meadows 2021
This national survey is complete.
Herts Urban Gull Survey 2021 - (JNCC Seabird Count 2015-2021)
This national survey is complete.
English Farm Woodland Bird Survey 2019 (BTO)
This national survey is complete.
Projects on Biodiversity Action Plan species - Tree Sparrows
This local survey is complete.


