I mentioned in a previous blog that you can tell different species of bush cricket and grasshoppers by their songs. I have recorded the songs of our two species of cone head bush crickets to demonstrate this. Their songs are very high pitched and quiet – so to make them audible I have used a bat detector which makes the high pitched noises audible via the clever electronics in the box.
I used an old QMC bat detector set at a frequency of 40 KHz.
This is a male long winged cone head – which makes the noise – photographed at the Devon Wildlife Trust’s Chudleigh Knighton heath reserve this week
Here is the female – with the long straight ovipositor – photographed on St Mary’s on the Isles of Scilly in 2008
And here is the song of the long winged cone head played through the bat detector and recorded on my iPhone last week
– its like a vintage tractor chugging along!
Here is a female short winged cone head (short wings and a curved ovipositor) photographed on salt marsh in Exton today
Here is the male short winged cone head – again note the short wings! Photographed on salt marsh in Exton today
And here is the song of the male short winged cone head – recorded yesterday – its like a vintage tractor which changes gear as it goes along.