Grey Partridge and Turtle Dove no longer seem to frequent North Devon - when I first moved here in 1979, They were regular in Braunton Burrows (a National Nature reserve) so not subject to intensive farming. Could their rapid decline and disappearance have anything to do with the preponderance of dog walkers? there used to be two groups of bird ringers using the Burrows, but within a few years, the dog walkers arrived earlier and earlier until it was impossible to get the nets open without dogs bounding around. Of course it doesn't help that Grey Partridge is still on the shooters hit list...
Grey Partridges definitely a victim of intensive farming down here Jon. Used to be 10 a penny everywhere, including plenty of places with no people/dogs.
What is a good day numbers wise for seeing trans-Saharan migrants now used to be the norm. Most of our birds are in big trouble.