Introductory Bat Detector Workshop, Worcester, May 2014

This introductory bat detector workshop involves an evening classroom session followed by a practical field session starting around dusk. Bat sounds are broken down into four elements in order to train people's sonic memory and aid species identification using a heterodyne bat detector in the field. The focus is on pipistrelles, noctule, serotine and Daubenton's bat as these illustrate a range of different bat sounds and are the species monitored on National Bat Monitoring Programme bat detector surveys. The workshop will be led by Rebecca Collins.

6.45pm Arrivals/teas/coffees/biscuits

7.00pm Introduction to the National Bat Monitoring Programme

7.30pm Bat detector workshop - "Using Your Ears"


  • Heterodyne detectors
  • Sonic memory and hearing
  • 4 elements

Element 1: Repetition Rate

  • Recognising repetition rates
  • Relationship with wingbeat
  • Body size
  • Variation in repetition rate

Element 2: Rhythm

  • Describing rhythms
  • Rhythms of the species
  • What can it tell us?
  • Relationship between wingshape and pulse rhythm

15 minute break - please bring something to eat and drink

Element 3: Tonal quality

  • Sound "richness"
  • Call duration

Element 4: Pitch

  • Why pitch is important
  • Finding peak frequencies
  • Round-up & Questions

9.00pm Look at sites that need surveying in region and opportunity to sign up

9.15pm Practical session/bat walk using detectors to listen for bats and practise survey techniques

10.30pm Finish (you can leave earlier if you need to)

£15/£7 concessions (NBMP volunteers/BCT members/partner bat group members/unwaged)

Up to 15 free places will be available to Worcestershire Bat Group members. This workshop is now fully booked.

If you are not a member of this group please book on using the Register button at the top of this page.