Derbyshire Constabulary has published the following message on social media this evening:
Derbyshire Rural Crime Team is investigating after two birds of prey were found dead in the Ault Hucknall area of Chesterfield.
A Kestrel and a Buzzard were found on Monday 23 March. Initial investigations lead us to believe they have been poisoned rather than shot.
The birds have been recovered and an investigation launched.
Anyone with information is asked to contact the Rural Crime Team by emailing DRCT@derbyshire.police.uk quoting reference 20000159754.
You can also pass information anonymously to Crimestoppers by calling 0800 555 111 or visiting https://crimestoppers-uk.org/
Well done to the police for a very speedy notification. Obviously the investigation is still in the early stages although the proximity of a plucked wood pigeon in these photos is probably a big clue.
UPDATE 3rd August 2020: Buzzard and kestrel confirmed illegally poisoned in Derbyshire (here)