Observed whilst on holiday in Funchal, Madeira.
No interactions present.
These things squeak loudly if you pick them up. A very effective anti-predator device, even if you know and expect it!
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Sorry it's taken me so long to say thanks for the information, I'm glad I didn't try picking it up! Thanks also to everyone that agreed with my identification. Only now found out how to read comments after posting observations.
Lat/Lng: 32.6473, -16.9051