Thanks Breffni, just some still grabs off my Sony camcorder. Have other shots of owl using infared but they look a bit scary with two big flashlight-type eyes! Spent 2 - 3 hours at owl location this afternoon - found an additional 8 pellets - all mice. The owl in the photo was calling loudly in the typical "squeaky-gate" way, indicating it is a young bird. I watched it for 10 mins with the nightscope and it was capable of short flights (max 15ft), if a bit jittery. As fledgling takes place at 30 days, I'd recon this bird was c.28days old. Combined with 25-30 days incubation this means the egg was laid on approx. 17 April. I found it strange however that there was only 1 young bird calling, as they usually lay 3 to 5 eggs. I was also surprised at the easily visible eartuffs; none of my books indicate at what stage of maturity these grow.