Body
The aim of this survey is to measure the butterfly species richness at the HERB sites using a variation of the Pollard Walk transect method
Key attributes
Butterfly species richness
Skill level
Good butterfly ID skill level required
Materials/equipment
- Survey form
- Clipboard and pen/pencil
- ID/spotter sheet (if using)
- Transect route map
Timing
Weekly between 1st April - 30th September
Method
• Takes place between 1st April – 30th September
• Takes place weekly (or as often as possible in long periods of bad weather)
• Time: between 10:00 and 17:00, though butterfly activity may drop off rapidly during the late afternoon so later times should be avoided
• Weather: warm (minimum 13°c) and at least bright weather, with no more than moderate winds and not when it is raining
• Walk at a slow, steady pace counting all butterflies seen within 5m
• Follow the transect route provided, and complete the full route
Survey forms
References
https://ukbms.org/guidance-recording-forms