2 cats, 1 squirrel

So , today I pulled open the bedroom curtains to find a tabby sitting on the wall admiring the ivy hedge. I shooed it away .
Then a wee while later I opened the living room curtains to see a big orange cat sitting looking up admiring the ivy hedge.
Looked out the kitchen window at lunchtime just as a big grey squirrel ran down the tree beside the ivy hedge.
What is the interesting in the boring old ivy hedge. I think the Blackie has a nest in there!