Canarian Kestrel [Falco tinnunculus canariensis]
In Madeira, they mainly feed on Madeira Wall Lizards, Teira dugesii, though they can also eat mice and earthworms.
Started reading this... so far an eye opener for those optimistically clutching at straw.
https://www.amazon.com/dp/B0874W8C47/ref=pe_385040_118058080_TE_M1DP