BTO Breeding Bird Survey 2024: squares available

There is still time to sign up to take part in the BTO Breeding Bird Survey (BBS) for this coming breeding season. Some squares have recently become available and there are plenty of squares available right across the county; some of these squares are accessible if you have limited mobility or if you are reliant on or choose to use public transport.

This national monitoring scheme is administered by the BTO and jointly funded by the BTO, JNCC and RSPB. It has been running since 1994 and its primary aim is to provide population trends for common and widespread bird species in the UK. Population trends for Sussex are also produced and published in the Sussex Bird Report. Survey plots are randomly-selected 1-km squares of the National Grid, and the same squares are surveyed each year. Volunteers visit their squares three times each year during the breeding season, once to record simple habitat data, and twice to walk a fixed route, recording birds seen and heard. There are more than 200 BBS squares across Sussex, covering every type of habitat, and new volunteers are always needed.

Volunteers must be able to recognise common and widespread birds by sight and sound, and must be able to physically get around a survey route reasonably early in the morning, but beyond those requirements absolutely anybody is welcomed into this survey scheme. Previous experience of survey work is not necessary and help and support from experienced volunteers can be arranged if required. Finally there is no requirement to conduct surveys alone – take a friend with you!

The full list of BBS squares (asterisks indicate priority squares that have been surveyed before) in Sussex which currently need volunteers for the 2024 breeding season (updated 1/5/2024) is as follows:

SU7907 near Funtington*
SU8527 near Milland*
SU8615 Westdean Woods*
SU8718 near Cocking*
SU9113 near East Dean*
SU9729 near Northchapel*
SU9923 near Petworth*
SZ7996 East Wittering*
SZ8199 near Birdham
TQ0124 near Kirdford*
TQ0322 near Codmore Hill*
TQ0826 Billingshurst
TQ1004 Durrington*
TQ1323 Dragon’s Green*
TQ2536 Gossops Green
TQ2638 Langley Green*
TQ2836 central Crawley
TQ4716 near Isfield*
TQ4821 Uckfield*
TQ4938 near Blackham*
TQ5026 High Hurstwood
TQ5128 near Crowborough*
TQ5211 near Golden Cross*
TQ5220 Blackboys*
TQ5228 near Crowborough*
TQ5435 near Eridge Station*
TQ5639 Tunbridge Wells*
TQ6817 near Penhurst
TQ7624 near Bodiam
TQ7811 Hollington*
TQ8518 near Udimore*

The following BBS squares may be accessible to you if you have limited mobility (including using a wheelchair) as the survey routes are entirely on pavements and minor roads:

SZ7996 East Wittering
TQ2638 Langley Green
TQ2836 central Crawley
TQ5639 Tunbridge Wells

The following BBS squares may be accessible by train as they are close to rail stations (other squares may be easily accessible by bus):

TQ2836 central Crawley
TQ4821 Uckfield
TQ5435 near Eridge Station

For further information, please contact Helen Crabtree at Please do not hesitate to ask if you have any questions about the survey or about any of the available squares.