https://britishbirds.co.uk/sites/default/files/2011_V104_N08_416-431_Chough.pdf
This was a report in 2011 about the Chough’s return to England and to Cornwall on it’s first 10 after it’s return around 2001 and the prospect for the Chough as a breeding bird in England and in Cornwall!.
Regards,
Ian.