John,
I have to admit, its one of the birds of have seen quite a lot of this year, maybe because i'm a fisherman? When fishing at Warwick on the Avon, they pass me many times during the day, sometimes they land on nearby branches and sometimes as happened to a friend two pegs down the river, it landed on his pole, he couldn't believe how heavy this small bird was, probably felt even heavier as it was sitting at 10m, but made his day.
Sorry, this can't be helping.
Got some good views at Snettersham RSPB reserve earlier this year, certainly worth the walk round to the hides.
Regularly seen at Brandon Marsh, probably seen 7 out of 10 visits, or at least by me and the lass, guess were just lucky.
Hope your luck changes.