- Introduction to the species –
see BTO, RSPB and SRSG websites - Breeding distribution – see Bird Atlas
- Protection designations – Birds Directive 1979 (Annex 1), Wildlife and Countryside Act 1981 (Schedule 1)
- National survey years – 1988/89, 1998, 2004, 2010, 2016, 2023
- Monitoring method – see Raptors: A Field Guide for Surveys and Monitoring
Annual monitoring data
Please click on the links below to access summary data. These summaries are based on SRMS regions. Descriptions of some of the main headings reported against are provided here.
2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022
National and regional trends
Our latest analysis of SRMS Hen Harrier data for the period 2009-2018 has produced no national trends in breeding number or productivity at a national level, but has produced trends for six of the 11 SRMS regions and for ten of the 19 NHZ regions for which the SRMS holds Hen Harrier records.
Please see below for a more detailed account for this species. To find out more about the trends analysis and the various products we have been able to produce please visit the Trends pages.
Hen Harrier trends 2009-2018Local Hen Harrier studies & projects
| Name | Period | Main observer | Other observers | Organisation |
|---|---|---|---|---|
| X | X | X | X |