Bird calls/sounds

[MickG]

When I take the dogs out in the night 10 -12 for their toilet before bed time I hear in the woods an unusual sound.
The sound is like a high pitch hammer drill and it goes on for a long time and then changes pitch.
Any one have ideas what bird it can be?
Thanks
Mick

 

[lou1661]

Does it sound like https://www.british-birdsongs.uk/eurasian-nightjar/

 

[MickG]

That is the same sound but it does not change tone as often,seems a longer call. I will check again tonight and time the calls.
Thanks

 

[TLM]

Maybe common grasshopper warbler (Locustella naevia), or one of the close relatives. Also a very unbirdy sound. Though I like nightjar better.

 

[MickG]

is the nightjar the same as the eurasion nightjar .?
My bird book only lists nightjar and it has a disk with bird songs and calls so it is a nightjar not a grasshopperwarbler

 

[TLM]

Yes, only spain has two species.