The Osprey returns

I couldn't resist having another look for the Osprey just N of Rowsley this evening. I had been stood in the same place as last night for no more than 10 minutes when I caught site of it flying in to the same try with a large trout. This time the sun wasn't a problem and I managed to get quite a bit closer. 
The photo in the tree was taken with the Canon 7D with 300mm f/2.8 II + the converter 2x III. I've been a little unhappy with the 2x converter but have now calibrated it to the lens and the autofocus appears much sharper, I was still perhaps 300 metres from the bird so I think this is quite a good result.
The blue Darvic ring looks to have AU on it so it may be possible to identify where this bird is from.

Osprey