this afternoon it was -6C but with 90% snow cover and bright sun I was really struggling to get anything sharp and the AF on the camera was at best hopeless on a moving bird -- shimmer and atmospheric distortion seem to be to blame but the cold air also seemed to have a detrimental effect -- in the hour that I was watching this bird it caught 5 short-tailed field voles and something bigger so at least it seems to be doing OK
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