who did the poo?

who did the poo?

Observation - who did the poo?. Description: poo found in my garden on the ground underneath my birdtable. Approx an inch in length and dark green in colour. Is it fox or is it owl?

poo found in my garden on the ground underneath my birdtable. Approx an inch in length and dark green in colour. Is it fox or is it owl?