ALWAYS IN SEASON: Gulls present challenges for birders
Gulls may be the most opportunistic birds.
This struck me forcefully last week, when I encountered a flock of gulls following a tractor. The tractor was pulling a cultivator, and the gulls were picking grubs from the ground overturned by the machine.
This was an old-fashioned tractor, not one of the behemoths that are characteristic of today's agriculture. There was no cab: the tractor driver rode in the open air.
And the gulls flocked behind him.
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