Sunday 24 September 2017

24th September

A drake Wigeon on the Manor Pond today was the first I’ve seen this year and pushed the year list up to a measly 101 species. I am really missing the wader habitat of last year!


Yesterday the Manor Garden was alive with Blackbirds with at least two dozen around the lake. They were very jumpy and active so I assume they were fresh arrivals (from the continent?). They also spotted a Tawny Owl in a weeping willow on the island and eventually drove it out, sending it flying low across the water. They had all gone by today.
Other sightings included Woodcock over the Magic Garden, Little Egret, 200 Goldfinches and two Grey Wagtails by the river and a flock of 45 Meadow Pipits in the Bottom Fields. I also spotted this Stoat running along the railway…


Earlier in the week I went bat detecting with our neighbour Jim and friends of his, Phil & Lynda, from the Nottinghamshire Bat Group. Phil had a very sophisticated bat detector which recorded the calls. They were then put through a piece of software which turned them into sonograms. Not great pics but they were on my phone (and in the pub!)…


This one shows the ‘hockey stick’ shape of pipistrelle bats (in this case Common Pipistrelle)


Another pip but this time at a higher frequency (between 50 & 60khz) - this is a Soprano Pipistrelle.


This one shows some species of myotis bat (possibly Natterer’s) with a second species, Noctule, shown in the short straight sequence at 20khz. We also recorded another myotis bat but this time near the water so presumably Daubenton’s bat.


and this one shows  pip again but the effect of different habitats. The flatter, deeper (and therefore further carrying) calls are when the bat is in the open and the higher pitched are when it was hunting around the tree canopy (this was recorded at the top of Greenhills Lane).

3 comments:

  1. Fascinating to see the bat calls, i'd love to do this here to see if there is anything other than Pipistrelle!

    ReplyDelete
  2. Thanks Pam, it was a really cold night too so would be good to get them to visit on a nice humid summer's night!

    ReplyDelete
    Replies
    1. Yes, something to look into for next year!

      Delete