Bert was not alone at Alan's house...
While Alan was at the land office, Bert the Parrot took the day to explore his new household. In each room he found at least one nice perch with a full view of his surroundings. He also found signs of a predator - and knew that somewhere a cat was lurking. Bert has a keen sense of smell, and there was the obvious evidence - a bowl of cat food in the kitchen, near a little flip door to the outside. Bert had been around cats before, so he knew.
After eyeing the kitchen for a while from atop the cupboard, Bert flew down to sample some of the cat food, since Alan hadn't got around to buying proper Parrot food. After a few morsels, Bert became disgusted and then smelled strawberries hidden in a bowl, under a plate, on the counter. Bert knocked off the plate with his bill, which crashed on the floor, making quite a racket. This awakened Stinky, Alan's cat, who was sleeping on the back porch...
Stinky
While Bert happily chewed on strawberries, Stinky popped in through the cat door, saw Bert, and immediately jumped onto the counter at him. Bert shrieked, and, as birds often do when they take off in a hurry, pooped! On Stinky's head! Stinky was horrified at this insult, and jumped down to clean himself off. To a cat, being pooped on by a bird is probably the worst humiliation. Bert was back on top of the cupboard, giving Stinky the Eye...