Yes very sad, and my first thoughts were juvenile gull.
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Pat Sly said:Well, I can't see how to attach the photos as I can't find any wording as I did at the beginning of my reported find.
No, it's not obvious is it. Click on any appropriate reply box and then on "Use rich formatting" below and the full editor will open up.
As a matter of interest, where is Regatta Reach? Is it on the Thames at Henley or somewhere else?
Juvenile gulls are notiously difficult to identify even when they are alive.
tuwit said:Given that H5N1 is in the country again...
I think that is a very valid point.