I don't know of any evidence that they are. And it is often remarked that other raptors are more common than they were before the explosion of red kites.Nearholmer wrote: ↑27 Jun 2022, 10:31pm Very common birds indeed now in the area I usually trundle about on my bike, with no gap between the Chiltern release population and the population that I think started with a release at Rockingham in Northants. They’re so common across Bucks and Northants, and the bits of Beds and Oxon that I get to that you can almost rely on seeing one somewhere in the sky if you’ve got a good field of view, and I wonder if they are displacing other birds.
We're in south Oxfordshire and certainly see more buzzards than previously.
I found one study with numbers:
https://www.hawk-conservancy.org/conser ... opulation/
Jonathan