Went to RSPB Pulborough Brooks tonight to see if I could photograph Barn Owls which are apparently nesting above the visitor center there. Unfortunately, despite a two hour wait, I didn't see anything. There were about half a dozen builders there doing work on the visitor center buildings, and I suspect his might be the reason why. According to the sign in the car park, the building work will last until August - I may wait until then before I try again.
Still, while waiting, I did manage to photograph a Linnet for the first time, so the trip wasn't at all wasted: