Feed the Birds

 Here at the Lower Dairy Farm Gull Sanctuary, we've been busy feeding the birds.

But where do they come from?  And how do they know?  Are there gull scouts?  Here's my first furrow after lunch:

...and half an hour later:

According to the RSPB:
"Because winds are stronger at higher altitudes - so less energy-expending flapping is required - gulls are often thousands of feet in the air.  From such a vast height, and by using their keen eyesight, they have an excellent all-round view for many miles around. This allows them to exploit potential feeding opportunities very quickly."

Mystery solved.

Once upon a time, Farmer Humph very nearly ran over a gull; but that's a story I'm saving for another day.