‘The joy of having cats is watching them chase a flock of starling in the yard.’
When a number of starling fly onto the lawn, they flit from spot to spot and there can be hundreds of birds at any particular time. It drives the cats crazy.
The felines will run from window to window, to door desperately wanting out. The temptation is so great that when allowed out, there is no stalking or hunting. The cats runs at the birds who, of course, fly off.