Wait for a dropping!
Count the yellow dung flies or send the photo.
More pictures and results to follow - watch this space!
Take photo, note date, location and weather.
Thank you for taking part in this survey.
Always be safe and remember the Countryside Code
http://www.countrysideaccess.gov.uk/things_to_ know/countryside_code
Never go into a field without the farmer's permission, unless there is a public footpath.
Wait for another 10 minutes.