This calendar has been compiled by the Hertfordshire Natural History Society (HNHS) on behalf of natural history organisations in Hertfordshire. The type of event is colour coded: Outdoor events, Indoor meetings.
Sat 21 Mar 2026 (10am)
Amwell for birds and mammals
Park in Amwell Lane and meet near war memorial. SG12 9SS, TL 373 125, W3W flock.spirit.never.
Organised by: British Naturalists Association, Herts Branch
Tue 24 Mar 2026 (10:30)
Winter-spring Bryophyte Meeting 3/4
Meetings usually start at 10.30am and continue until mid-afternoon. Please contact Agneta Burton (m.a.s.burton@btinternet.com) for further details and if you wish to join the mailing list for the group.
Organised by: Other
Tue 31 Mar 2026 (7.30pm for 8pm)
'Where the Wild Things Are' – 150 years of Hertfordshire Natural History Society
HNHS Secretary David Utting reviews its distinguished history, contrasting the activities and equipment of Victorian natural historians with the way we go about things today (plus future challenges).
Organised by: RSPB South East Herts Group
Sat 04 Apr 2026 (10am)
Hunsdon for early spring flowers and signs of spring
Park in the village near the junction of High St (B180) and Drury Lane and meet outside the Crown pub. TL418 142, W3W races.ship.month.
Organised by: British Naturalists Association, Herts Branch
Wed 08 Apr 2026 (8pm)
An introduction to Maple Lodge Nature Reserve
Christina Bessant will talk about this beautiful local nature reserve.
Organised by: RSPB Watford Local Group
Wed 08 Apr 2026 (9.45am)
Local walk at Standon
The Lordship, Standon. A walk around glorious Hertfordshire countryside. Parking by St Mary’s Church in Standon High Street. Postcode: SG11 1LA.
Organised by: RSPB South East Herts Group
Sat 18 Apr 2026 (10am)
Burnham Green area area for spring wildlife
Park on village roads and meet on the village green. TL 262 165, W3W frogs.risk.winks
Organised by: British Naturalists Association, Herts Branch
Tue 28 Apr 2026 (10:30)
Winter-spring Bryophyte Meeting 4/4
Meetings usually start at 10.30am and continue until mid-afternoon. Please contact Agneta Burton (m.a.s.burton@btinternet.com) for further details and if you wish to join the mailing list for the group.
Organised by: Other
Wed 13 May 2026 (8pm)
Conservation work at Hillfield Park reservoir
This talk by Josh Kalms of the HMWT will focus on recent major works to improve habitat on this important local wetland area
Organised by: RSPB Watford Local Group
Tue 26 May 2026 (7.30pm for 8pm)
The status of butterflies in Hertfordshire and Middlesex
The speaker is county butterfly recorder Andrew Wood, author of 'Butterflies of Hertfordshire and Middlesex'.
The United Reformed Church Hall, Mill Lane, Broxbourne, EN10 7BG (Wheelchair accessible)
Organised by: RSPB South East Herts Group
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