On 2010-05-23 10:45:28 +0100, Hugh Newbury said:

A worse aberration of the AWS is one that happens every so often when
you get a sudden downpour that overwhelms the AWS. This happened
recently to me when we had a deluge of several mm in 20 minutes.

I've found in general that although prone to evaporation a cheap garden
centre funnel gauge gives a more accurate reading than my Davis tipping
bucket when the rate is anthing more than light rain. So I welcome the
occasional bird-assisted inflation.

Trevor