https://britishbirds.co.uk/sites/default/files/2012_V105_N01_23-28_HoneyBuzzard.pd
Thir link above was short paper about the Honey Buzzard in southern England and was published in 2012
Regards,
Ian.
https://britishbirds.co.uk/sites/default/files/2014_V107_N11_P668_691_HoneyBuz.pdf
The link above was another paper about the Honey Buzzard published in 2014 called Honey-Buzzards in Britain.