Alexander Hi,
Hawfinch is one of my (if not) favourite birds,
unfortunately they have largely disappeared from my neck of the woods (NE.London), primarily because the introduced Grey Squirrel population.
Which is no longer “controlled” by the “authorities”…suspect it’s not PC (politically correct) to do so now😩.
As I understand it, (Epping Forest is almost devoid of conifers), of which Grey Squirrels are not fond of, also a lack of mainline predators such as Pine Marten/Goshawk results in an infestation of the “rodent” to the detriment of any bird species that is primarily a “fork tree” nester, of which Hawfinch and Golden Oriole are principle to.
It can be no coincidence that once culling was stopped in the ‘90’s, Hawfinch started it’s year on year demise as the squirrel population expanded.
It’s an introduced rodent that should be controlled with absolute vigour, as it also strips native Hornbeam and Hawthorn berries to the detriment of “all” bird species that require this sustenance (Thrushes/Finches in Autumn Winter, personal observation).
Have seen, just two squirrels strip a mature Hawthorn of berries in just two days (back garden).
However there are parts of the country that have good numbers of conifers (roost/nesting trees) and populations of Goshawk/Pine Marten that enable Hawfinches to breed in reasonable numbers.
Not a problem you have on the continent Alexander.👍
Cheers