As it says - meet by the cafe near Mayow Road gate. Bring torches and sturdy shoes. Children welcome.
If you are going, please let the Friends of Mayow Park know, either via their FB group
or email that address, friendsofmayowpark@ymail.com
You get to play with some electronic kit which can pick up bats’ squeaks when pointed where they are flying, and bring them down in pitch a few octaves, so they be heard. Comes out as some distinctive clicks. When you hear them, you should be able to look up and see the bats themselves.
http://www.magenta2000.co.uk/acatalog/Bat_Detector_Mk_2.html
Not a lot of people know this, but different species of bat squeak at different frequencies, and it’s only recently that, thanks to this, experts realised there were more than one species of pipistrelle bat flying around our night skies.
We had someone doing a sound recording over a whole week at Dacres Wood Nature reserve, thanks to which we know that we have there three different species of pipistrelle - common (45 and 76 kHz), soprano (53 and 86 kHz) and Nathusius’s (36–62 kHz)