The calls seemed to be regular and constant, like a kind of contact call as the birds fed.
You only have my word on this, and I don't wish to sound big-headed, but I generally have a good ear for bird song and calls. Having said that, from what I can tell, most people say ID without sonograms etc is very difficult.
....(or DNA) I have not be able to say 100% that I saw the Scot Crosser.
Therefore like many before and many after I am returning to the Highlands to try and get some recordings so I can try and nail some for sure.
.....The trouble is that this can lead to even more confusion.....