I see about half a dozen from my garden, usually its a couple of "pairs" at any one time though.
I "know" the people that were involved in re-seeding the population ( same Falconry club, they used to keep us updated at the meetings) along the Beldlow ridge, ( part of the Chilterns,) back in '89 / '90. Within 10 years there were whispers of a cull, as they never expected them to be so so successful. (Competing with our buzzards mainly )
Its a bit of a quandary because there have always been small pockets of kites, (the indigenous ones.)
These however were sourced from Spain. (Non indigenous) And of course may have a slightly different genetic make up.
Under normal circumstances it is illegal to release non indigenous species into the wild...
Can they be sure they are only culling the Spanish ones? I doubt it.
They very quickly spread along the M40 corridor and branched out from there.
As already noted they are scavengers, and at one land fill I used to do bird control on, (near Gerrads Cross)
Early one morning I counted ( the best I could) 60 in the same thermal.
The dark coloured funnel, rising up was quite a sight to see!
And yes they were feeding there, the same as, I have a landfill site not that far from me, as the kite fly's, and a lot more can be seen, once you get closer.
When they first appeared here a few years ago, there were several articles in the local press about them snatching small dogs, which of course would have been
total rubbish, yes they are big birds but I doubt very much that their feet / Talons are big enough / strong enough to hold and carry away, a wriggling snarling small dog.
BoP's generally weigh up food source V not getting hurt in the process.
The other one that made me chuckle there was a couple of reports from a local school that kites were snatching sandwiches out of the hands of children.
IF it happened, I suggested that people learn to tell the difference between Red Kites and Gulls.
Which there is quite a large flock in the area, coming over, again, from the landfill looking for food, from over flowing bins,
from the local-ish food factories and fast food places.
Would I cull them if it was up to me? I honestly don't know, but I doubt it, they are making a nice living here scavenging, which is far easier than "Killing"
I still see buzzards on occasions, so I'm guessing their is plenty of food for everyone around these parts at least..