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.

Sun 05 Mar 2017 (8am to 10.15am)

Harpenden Lea Valley Walk

Guided bird walk along the River Lea. Meet at bridge near the 'Marquis of Granby' pub AL5 5AE

Organised by: RSPB Harpenden Local Group

Sat 11 Mar 2017 (2pm - 5.30pm)

Herts Bird Club / BTO Conference 2017

 The Bird Club / BTO 2017 conference takes place on Saturday 11 March 2017 at the offices of Affinity Water, Hatfield from 2 until 5.30pm. The programme is packed with bird watching, monitoring and natural history interest.

It will include presentations on:

Organised by: Herts Bird Club

Wed 22 Mar 2017 (9.45am)

Brocket Park bird walk

Half-day bird walk in Brocket Park (between Welwyn Garden City and Wheathampstead). Contact the leaders for details of meeting point <agdoubleday@sky.com>.

Organised by: RSPB Harpenden Local Group

Sun 09 Apr 2017 (10am to 4pm)

Rye Meads Spring Fun Day

The annual RSPB spring fun day at Rye Meads reserve near Hoddesdon is especially suitable for families.  The activities include trail walks, pond dipping, games, badge-making and other wildlife-related crafts and a pre-Easter egg hunt.

Organised by: Other

Sat 06 May 2017

Invertebrate recording at Balls Wood and Hertford Heath

Organised by: Herts Invertebrate Project

Sat 20 May 2017

Invertebrate recording at Oughtonhead Common

Organised by: Herts Invertebrate Project

Sat 03 Jun 2017

Invertebrate recording at Roughdown Common (Box Moor Trust)

Organised by: Herts Invertebrate Project

Sat 17 Jun 2017

Invertebrate recording at Panshanger Park

Organised by: Herts Invertebrate Project

Sat 15 Jul 2017

Invertebrate recording at Aldbury Nowers

Organised by: Herts Invertebrate Project