Hi, I have seen Ravens near me, but not sure if this is one of their calls. The sound starts at around 4 seconds into the video and repeats again around 20 seconds. There is also a glimpse of one of the birds - definitely Corvid, but not sure what type!
The intermittent noise and duration is very Raven like, but the actual call doesn't sound like any Raven I've ever heard.
Richard B
Pete
Birding is for everyone no matter how good or bad we are at it,enjoy it while you can
I've not managed to get any usable video or photos (on my phone) but have been able to use the video to get some audio.
They make a really unusual range of sounds, including the very sounds in the initial video. This clip includes another couple of different calls. I am 100% they are all from the same pair of birds around the nest site (very high in pine trees) as I do see them moving from tree to tree, I believe trying to lure me away from the nest if I get too close for their liking (I visit 1 or twice a week and never get very close, each time one of them seems to come out to meet me and then makes noises before moving through the tree tops, from one tree to another 20-30 metres into the woods, seemingly trying to get me to follow moving away from the nest area). I think this sound clip is clearest.
Play this audio clip
I'm with the others, it doesn't seem quite right for a raven.
Have a listen to the raven calls on the following link:
https://www.british-birdsongs.uk/common-raven/?type1506
Mike
Flickr: Peak Rambler