Not a starling lover

A dampish day so far with drier interludes.
The starlings have been coming down to the bird table to feed but as soon as they start to fall out with each other and squabble, Hector has charged out all guns blazing!
As soon as he hears their presence he's at the kitchen door to give them what for ... loud and aggressive barking. Yet, he looks so mild here!?
I think he derives a lot of satisfaction when he puts them to flight.

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