Squirrel reconnaissance tries to find a route past the basement office window.
Keyboard clattering and rhythmic sounds fall under questionable activity. Regroup thirty feet back.
Repeat.
Someone saying "Hey, Squirrel!" illicits a startled chirp and scurried regrouping twenty feet back.
Repeat.
Camouflaged camera is an unknown. Stop, turn, feint, chirp: try to draw the beast out of its lair. *CLICK* Regroup ten feet back.
Repeat.
Eventually the beast grows bored, patterns remain constant, the way is clear.
Feed.